feat(CI): add cppcheck (#15211)

Co-authored-by: Skjalf <47818697+Nyeriah@users.noreply.github.com>

.github/workflows/cpp-check.yml

@@ -0,0 +1,36 @@
+name: cpp-check
+on:
+  push:
+    branches:
+      - "master"
+    paths:
+      - src/**
+      - "!README.md"
+      - "!docs/**"
+  pull_request:
+    paths:
+      - src/**
+      - "!README.md"
+      - "!docs/**"
+
+jobs:
+  cpp-check:
+    strategy:
+      fail-fast: false
+    runs-on: ubuntu-22.04
+    name: cpp check
+    steps:
+      - uses: actions/checkout@v2
+      - name: cpp check
+        run: |
+          sudo apt update -y
+          sudo apt install -y cppcheck
+          cppcheck --force --inline-suppr \
+            -i src/server/game/Achievements/AchievementMgr.cpp \
+            -i src/server/game/AuctionHouse/AuctionHouseMgr.cpp \
+            -i src/server/game/Battlegrounds/Zones/BattlegroundSA.cpp \
+            -i src/server/game/DungeonFinding/LFGMgr.cpp \
+            -i src/server/game/Entities/GameObject/GameObject.cpp \
+            -i src/server/game/Entities/Pet/Pet.cpp \
+            -i src/server/game/Entities/Player/Player.cpp \
+            src/