feat: add drf apps to INSTALLED_APPS, update readme, add .env to .gitignore

Author: Janek Mangold

django/{{ cookiecutter.project_slug }}/.gitignore

@@ -1,4 +1,5 @@
 .idea/
+.env
 .env.*
 !.env.example
 .venv

django/{{ cookiecutter.project_slug }}/README.md

@@ -29,15 +29,24 @@
    ```bash
    git init --initial-branch=main
    ```
-3. Enable pre-commit hooks:
+
+3. Create a venv and install dependencies:
+
+   ```bash
+   uv venv
+   source .venv/bin/activate
+   uv sync
+   ```
+   
+4. Enable pre-commit hooks:
 
    ```bash
    pre-commit install
    ```
 
-4. Delete this section
+5. **Delete this section, because its only for the initial setup**
 
-5. Create an initial commit and push to the remote repository:
+6. Create an initial commit and push to the remote repository:
 
    ```bash
    git add .

django/{{ cookiecutter.project_slug }}/{{ cookiecutter.project_slug }}/settings/base.py

@@ -34,6 +34,10 @@
     "django.contrib.sessions",
     "django.contrib.messages",
     "django.contrib.staticfiles",
+{% if cookiecutter.use_drf %}
+    "rest_framework",
+    "drf_spectacular",
+{% endif}
 ]
 
 # Security