🔨(python-env) migrate meet main app to UV

Migrate main meet app to use UV for dependancy management.
Also optimized the backend image build sequence for faster rebuilds
when dependencies don't change.
Also removed compiled django translations files are they are done in the build
process now.

Changes inspired by drive repo.

.github/workflows/meet.yml

@@ -124,15 +124,17 @@ jobs:
         uses: actions/setup-python@v6
         with:
           python-version: "3.13"
-          cache: "pip"
-      - name: Install development dependencies
-        run: pip install --user .[dev]
+      - name: Install uv
+        uses: astral-sh/setup-uv@v7
+      - name: Install the project
+        run: uv sync --locked --all-extras
+
       - name: Check code formatting with ruff
-        run: ~/.local/bin/ruff format . --diff
+        run: uv run ruff format . --diff
       - name: Lint code with ruff
-        run: ~/.local/bin/ruff check .
+        run: uv run ruff check .
       - name: Lint code with pylint
-        run: ~/.local/bin/pylint meet demo core
+        run: uv run pylint meet demo core
 
   lint-agents:
     runs-on: ubuntu-latest
@@ -279,10 +281,10 @@ jobs:
         uses: actions/setup-python@v6
         with:
           python-version: "3.13"
-          cache: "pip"
-
-      - name: Install development dependencies
-        run: pip install --user .[dev]
+      - name: Install uv
+        uses: astral-sh/setup-uv@v7
+      - name: Install the dependencies
+        run: uv sync --locked --all-extras
 
       - name: Install gettext (required to compile messages)
         run: |
@@ -290,10 +292,10 @@ jobs:
           sudo apt-get install -y gettext
 
       - name: Generate a MO file from strings extracted from the project
-        run: python manage.py compilemessages
+        run: uv run python manage.py compilemessages
 
       - name: Run tests
-        run: ~/.local/bin/pytest -n 2
+        run: uv run pytest -n 2
 
   lint-front:
     runs-on: ubuntu-latest