[Chore] Introduce psalm (#962)

* chore: introduce psalm

* chore: remove dead code

* chore: run psalm workflow

* chore: run psalm in grumphp

* normalize composer.json

* chore: analyse --> analyze

* chore: just remove psalm when running tests instead of worrying about dependency mismatch hell

Co-authored-by: mr-feek <[email protected]>

.github/workflows/run-static-analysis.yml

@@ -0,0 +1,20 @@
+name: Run Static Analysis
+
+on:
+    push:
+    pull_request:
+    schedule:
+        - cron: '0 0 * * *'
+
+jobs:
+    build:
+        runs-on: ubuntu-latest
+
+        steps:
+            - uses: actions/checkout@v2
+
+            - name: Install dependencies
+              run: composer install --prefer-dist --no-progress --no-suggest
+
+            - name: Analyze
+              run: composer analyze

.github/workflows/run-tests.yml

@@ -61,7 +61,7 @@ jobs:
 
     - name: Install dependencies
       run: |
-        composer remove phpro/grumphp --no-interaction --no-update --dev
+        composer remove phpro/grumphp vimeo/psalm --no-interaction --no-update --dev
         composer require "laravel/framework:${{ matrix.laravel }}" "orchestra/testbench:${{ matrix.testbench }}" --no-interaction --no-update --no-progress
         composer update --${{ matrix.dependency-version }} --prefer-dist --no-interaction --no-suggest