docs: update CHANGELOG and RULES for GCI109

Author: hassineabd

CHANGELOG.md

@@ -9,6 +9,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- Add rule GCI109: Avoid Using Exceptions for Control Flow (Python)
+
 ### Changed
 
 - add documentation link for each rule in RULES.md file

RULES.md

@@ -85,6 +85,7 @@ Some are applicable for different technologies.
 | GCI106   | Avoid Square Root Operations In Loop                                                | Using scalar `math.sqrt` (or `numpy.sqrt` on individual values) inside loops leads to inefficient code                                                                                                                                                                                                                                                                                                                        |                                                                                                                                                                                                                                               | 🚫   | 🚫  | 🚫 | ✅      | 🚫   | 🚫 | 🚫   | [documentation](https://github.com/green-code-initiative/creedengo-rules-specifications/tree/main/src/main/rules/GCI106) |
 | GCI107   | Data : Avoid Iterative Matrix Operations                                            | Use vectorization by the usage of the built-in functions of TensorFlow, NumPy or Pandas                                                                                                                                                                                                                                                                                                                                       |                                                                                                                                                                                                                                               | 🚫   | 🚫  | 🚫 | ✅      | 🚫   | 🚫 | 🚫   | [documentation](https://github.com/green-code-initiative/creedengo-rules-specifications/tree/main/src/main/rules/GCI107) |
 | GCI108   | Prefer Append Left                                                                  | When you want to insert an element at the beginning of a list, it's better to use a deques or a double linkedlist.                                                                                                                                                                                                                                                                                                            |                                                                                                                                                                                                                                               | ❓    | ❓   | ❓  | ✅      | ❓    | ❓  | ❓    | [documentation](https://github.com/green-code-initiative/creedengo-rules-specifications/tree/main/src/main/rules/GCI108) |
+| GCI109   | Avoid Using Exceptions for Control Flow                                            | Using exceptions for control flow (loops, defaults, branching) is expensive in Python. Prefer idiomatic alternatives like dict.get(), enumerate(), getattr() with defaults, or proper iteration patterns.                                                                                                                                                                                                                    |                                                                                                                                                                                                                                               | 🚫   | 🚫  | 🚫 | ✅      | 🚫   | 🚫 | 🚫   | [documentation](https://github.com/green-code-initiative/creedengo-rules-specifications/tree/main/src/main/rules/GCI109) |
 | GCI203   | Detect unoptimized file formats                                                     | When it is possible, to use svg format image over other image format                                                                                                                                                                                                                                                                                                                                                          |                                                                                                                                                                                                                                               | 🚧   | 🚀  | 🚀 | ✅      | 🚀   | 🚀 | 🚫   | [documentation](https://github.com/green-code-initiative/creedengo-rules-specifications/tree/main/src/main/rules/GCI203) |
 | GCI404   | Avoid list comprehension in iterations                                              | Use generator comprehension instead of list comprehension in for loop declaration                                                                                                                                                                                                                                                                                                                                             |                                                                                                                                                                                                                                               | 🚫   | 🚫  | 🚫 | ✅      | 🚫   | 🚫 | 🚫   | [documentation](https://github.com/green-code-initiative/creedengo-rules-specifications/tree/main/src/main/rules/GCI404) |
 | GCI522   | Sobriety: Brightness Override                                                       | To avoid draining the battery, iOS and Android devices adapt the brightness of the screen depending on the environment light.                                                                                                                                                                                                                                                                                                 |                                                                                                                                                                                                                                               | 🚫   | 🚫  | ✅  | 🚫     | 🚫   | 🚫 | 🚫   | [documentation](https://github.com/green-code-initiative/creedengo-rules-specifications/tree/main/src/main/rules/GCI522) |