.github: Add initial CodeQL config and workflow files

REF:https://bugzilla.tianocore.org/show_bug.cgi?id=4115

Adds initial support for enabling CodeQL Code Scanning in this
repository per the RFC:

  https://github.com/tianocore/edk2/discussions/3258

Adds the following new files:
  - .github/workflows/codql-analysis.yml - The main GitHub workflow
    file used to setup CodeQL in the repo.
  - .github/codeql/codeql-config.yml - The main CodeQL configuration
    file used to customize the queries and other resources the repo
    is using for CodeQL.
  - edk2.qls - A query set of queries to run for CodeQL.

Cc: Sean Brogan <sean.brogan@microsoft.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>

.github/codeql/codeql-config.yml

@@ -0,0 +1,30 @@
+## @file
+# CodeQL configuration file for edk2.
+#
+# Copyright (c) Microsoft Corporation.
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+##
+
+name: "CodeQL config"
+
+# The following line disables the default queries. This is used because we want to enable on query at a time by
+# explicitly specifying each query in a "queries" array as they are enabled.
+#
+# See the following for more information about adding custom queries:
+# https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/configuring-code-scanning#using-a-custom-configuration-file
+
+#disable-default-queries: true
+
+queries:
+  - name: EDK2 CodeQL Query List
+    uses: ./.github/codeql/edk2.qls
+
+# We must specify a query for CodeQL to run. Until the first query is enabled, enable the security query suite but
+# exclude all problem levels from impacting the results. After the first query is enabled, this filter can be relaxed
+# to find the level of problems desired from the query.
+query-filters:
+- exclude:
+    problem.severity:
+      - error
+      - warning
+      - recommendation

.github/codeql/edk2.qls

@@ -0,0 +1,12 @@
+---
+- description: EDK2 (C++) queries
+
+# Bring in all queries from the official cpp-queries suite so individual queries can be explicitly enabled.
+
+- queries: '.'
+  from: codeql/cpp-queries
+
+# Enable individual queries below.
+
+- include:
+    id: cpp/conditionallyuninitializedvariable

.github/workflows/codeql-analysis.yml

@@ -0,0 +1,91 @@
+# @file
+# GitHub Workflow for CodeQL Analysis
+#
+# Copyright (c) Microsoft Corporation.
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+##
+
+name: "CodeQL"
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+    paths-ignore:
+      - '**/*.bat'
+      - '**/*.md'
+      - '**/*.py'
+      - '**/*.rst'
+      - '**/*.sh'
+      - '**/*.txt'
+
+  schedule:
+    # https://crontab.guru/#20_23_*_*_4
+    - cron: '20 23 * * 4'
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: windows-2019
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        package: [
+          "ArmPkg",
+          "CryptoPkg",
+          "DynamicTablesPkg",
+          "FatPkg",
+          "FmpDevicePkg",
+          "IntelFsp2Pkg",
+          "IntelFsp2WrapperPkg",
+          "MdeModulePkg",
+          "MdePkg",
+          "PcAtChipsetPkg",
+          "PrmPkg",
+          "SecurityPkg",
+          "ShellPkg",
+          "SourceLevelDebugPkg",
+          "StandaloneMmPkg",
+          "UefiCpuPkg",
+          "UnitTestFrameworkPkg"]
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v3
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v2
+      with:
+        languages: 'cpp'
+        # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python', 'ruby' ]
+        # Learn more about CodeQL language support at https://codeql.github.com/docs/codeql-overview/supported-languages-and-frameworks/
+        config-file: ./.github/codeql/codeql-config.yml
+        # Note: Add new queries to codeql-config.yml file as they are enabled.
+
+    - name: Install/Upgrade pip Modules
+      run: pip install -r pip-requirements.txt --upgrade
+
+    - name: Setup
+      run: stuart_setup -c .pytool/CISettings.py -t DEBUG -a IA32,X64 TOOL_CHAIN_TAG=VS2019
+
+    - name: Update
+      run: stuart_update -c .pytool/CISettings.py -t DEBUG -a IA32,X64 TOOL_CHAIN_TAG=VS2019
+
+    - name: Build Tools From Source
+      run: python BaseTools/Edk2ToolsBuild.py -t VS2019
+
+    - name: CI Build
+      run: stuart_ci_build -c .pytool/CISettings.py -p ${{ matrix.package }} -t DEBUG -a IA32,X64 TOOL_CHAIN_TAG=VS2019
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v2