ci: enable workflow_dispatch and install project in CI (#47)

Author: CoderDeltaLAN

.github/workflows/ci.yml

@@ -3,6 +3,7 @@ on:
   pull_request:
   push:
     branches: [ main ]
+  workflow_dispatch:
 
 jobs:
   python:
@@ -26,10 +27,10 @@ jobs:
         run: python -m pip install -U pip
 
       - name: Install tools
+        run: pip install pytest mypy ruff black
 
       - name: Install project
         run: pip install -e .
-        run: pip install pytest mypy ruff black
 
       - name: Ruff
         run: ruff check .