docs: Move proprocessor symbols to its own page

Author: jcs090218

README.md

@@ -50,14 +50,6 @@ from the above tab, or from the link
 . Simply create a new project in Unity then import all of the assets into
 that project. Then you can start all of the tools in the JCSUnity framework.
 
-### ⚖️ Preprocessor Symbols
-
-A list of preprocessor symbols supported by this framework.
-
-| Name              | Description                  |
-|:------------------|:-----------------------------|
-| `JCS_USE_GAMEPAD` | Flag to add gamepad support. |
-
 ## 🏆 Features
 
 So, what does this framework does? Check out the

docs/Manual/Preprocessor Symbols.md

@@ -0,0 +1,7 @@
+# Preprocessor Symbols
+
+A list of preprocessor symbols supported by this framework.
+
+| Name              | Description                  |
+|:------------------|:-----------------------------|
+| `JCS_USE_GAMEPAD` | Flag to add gamepad support. |