doc: improve example notebook presentation (#16)

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#### Description of changes
<!-- Add a high-level description of changes, focusing on the *what* and
*why*. -->

Basic demo:

- [X] Added heading structure
- [X] Stated intended learning outcomes
- [X] Included description of function composition with JAX
compatibility

CFD demo:

- [x] Added heading structure
- [x] Stated intended learning outcomes
- [x] Brief explanation of what's going on
- [X] Replaced verbose print output with tqdm
- [X] Included @jpbrodrick89's very cool LBFGS optimiser
- [X] Embedded animation for interactive play in Jupyter Notebook

#### Testing done
<!-- Describe how the changes were tested; e.g., "CI passes", "Tested
manually in stagingrepo#123", screenshots of a terminal session that
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None.

#### License

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- [X] I sign the Developer Certificate of Origin below by adding my name
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---------

Co-authored-by: Dion Häfner <[email protected]>

Author: jacanchaplais

examples/README.md

@@ -5,4 +5,4 @@ This directory contains example Tesseract configurations, notebooks. and scripts
 ## Examples
 
 - [Simple](simple/demo.ipynb): A basic example of using Tesseract-JAX with a simple vector addition task. It demonstrates how to build a Tesseract and execute it within JAX.
-- [CFD](cfd/demo.ipynb): A more complex example demonstrating how to use Tesseract-JAX to differentiate through a computational fluid dynamics (CFD) simulation Tesseract.
+- [CFD](cfd/demo.ipynb): A more complex example demonstrating how to use Tesseract-JAX to differentiate through a computational fluid dynamics (CFD) simulation in an optimization context.

examples/cfd/demo.ipynb

@@ -1,4 +1,5 @@
 jax_cfd
 matplotlib
+scipy
+tqdm
 pillow
-optax