Add more steps to ci workflow

Author: Flo0807

.github/workflows/ci.yml

@@ -30,12 +30,23 @@ jobs:
             _build
           key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-mixlockhash-${{ env.MIX_LOCK_HASH }}
 
-      - name: Install Dependencies
+      - name: Install mix dependencies
+        if: steps.restore-cache.outputs.cache-hit != 'true'
         run: mix deps.get
 
+      - name: Compile dependencies
+        if: steps.restore-cache.outputs.cache-hit != 'true'
+        run: mix deps.compile
+
+      - name: Compile
+        run: mix compile --warnings-as-errors --force
+
       - name: Check Formatting
         run: mix format --check-formatted
 
+      - name: Check unused deps
+        run: mix deps.unlock --check-unused
+
       - name: Run Tests
         run: mix test