init Python uv env setup for fidle training

.gitignore

+# Python-generated files
+__pycache__/
+*.py[oc]
+build/
+dist/
+wheels/
+*.egg-info
+
+# Virtual environments
+.venv

README.md

+# Python uv env for fidle
+
+1. To setup the environment, run:
+```python
+uv init
+uv sync
+```
+
+2. To get fidle materials and datasets, run:
+```python
+uv run fid install
+```
+
+3. To start the notebook server, run:
+```python
+uv run jupyter lab
+```
+