Added CodeQL analysis (#7208)

Adds CodeQL analysis because LGTM was disabled and removed.

.github/workflows/analysis_codeql.yml

@@ -0,0 +1,91 @@
+name: Analyse servers with CodeQL
+# analysis_codeql.yml
+
+concurrency:
+  group: ${{ github.repository }}-${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    paths:
+      # Always trigger all Github Actions if an action or something CI related was changed
+      - '.github/workflows/**'
+      - 'tools/ci/**'
+      # This workflow should run when a file in a source directory has been modified.
+      - 'src/**'
+      - '3rdparty/**'
+
+jobs:
+  analyze:
+    # Github Actions checks for '[ci skip]', '[skip ci]', '[no ci]', '[skip actions]', or '[actions skip]' but not a hyphenated version.
+    # It's a catch-all incase a Pull Request has been opened and someone is on auto-pilot.
+    if: "!contains(github.event.head_commit.message, 'ci-skip')"
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+          # The ubuntu-latest label currently points to ubuntu-20.04.
+          # Available: ubuntu-22.04, ubuntu-20.04
+          os: [ubuntu-latest]
+          # Older versions of GCC are not available via unaltered aptitude repo lists.
+          gcc: ['10']
+          # We run build checks for both Renewal and PRE-Renewal
+          mode: ['PRE','RE']
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      # Initializes the CodeQL tools for scanning.
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v2
+        with:
+           # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python', 'ruby' ]
+           # Learn more about CodeQL language support at https://aka.ms/codeql-docs/language-support
+           languages: cpp
+           # Trigger security and quality findings
+           # https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/configuring-code-scanning#using-queries-in-ql-packs
+           # TODO: Resolve the issues and then enable it again
+           #queries: +security-and-quality
+
+      # A simple 'yes' and 'no' can be confusing, so we use names to display in the current job then convert them for use in the compiler.
+      - name: Variable Parsing - PRE
+        if: ${{ matrix.mode == 'PRE' }} 
+        run: |
+          echo "PRERE=yes" >> $GITHUB_ENV
+      - name: Variable Parsing - RE
+        if: ${{ matrix.mode == 'RE' }} 
+        run: |
+          echo "PRERE=no" >> $GITHUB_ENV
+
+      - name: Update & Install packages
+        # Ubuntu runners already have most of the packages rAthena requires to build.
+        # https://github.com/actions/virtual-environments/blob/main/images/linux/Ubuntu2004-Readme.md
+        run: |
+          sudo apt update
+          sudo apt install zlib1g-dev libpcre3-dev gcc-${{ matrix.gcc }} g++-${{ matrix.gcc }}
+
+      # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
+      # If this step fails, then you should remove it and run the build manually (see below)
+      #- name: Autobuild
+      #  uses: github/codeql-action/autobuild@v2
+
+      # ✏️ If the Autobuild fails above, remove it and uncomment the following
+      #    three lines and modify them (or add more) to build your code if your
+      #    project uses a compiled language
+      - name: Command - configure
+        env:
+            CONFIGURE_FLAGS: 'CC=gcc-${{ matrix.gcc }} CXX=g++-${{ matrix.gcc }} --enable-prere=${{ env.PRERE }} --enable-buildbot=yes'
+        run: ./configure $CONFIGURE_FLAGS
+
+      - name: Command - make clean
+        run: make clean
+
+      - name: Command - make server
+        run: make server
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v2