Add filex excluded by the gitignore.

vendor/MaxmindDB/.github/workflows/codeql-analysis.yml

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+name: "Code scanning - action"
+
+on:
+  push:
+  pull_request:
+  schedule:
+    - cron: '0 7 * * 2'
+
+jobs:
+  CodeQL-Build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+      with:
+        # We must fetch at least the immediate parents so that if this is
+        # a pull request then we can checkout the head.
+        fetch-depth: 2
+        submodules: true
+
+    # If this run was triggered by a pull request event, then checkout
+    # the head of the pull request instead of the merge commit.
+    - run: git checkout HEAD^2
+      if: ${{ github.event_name == 'pull_request' }}
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v1
+
+    - run: sudo apt install libipc-run3-perl libfile-slurp-perl libfile-which-perl pandoc
+    - run: |
+            ./bootstrap
+            ./configure
+            make
+            make safedist
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v1

vendor/MaxmindDB/.github/workflows/test.yml

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+name: Run tests
+on:
+  push:
+  pull_request:
+  schedule:
+    - cron: '3 20 * * SUN'
+jobs:
+  test-autoconf:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+        cc: [gcc, clang]
+        posix: ['', -D_POSIX_C_SOURCE=200112L]
+    name: Autotools build on ${{matrix.os}} using ${{matrix.cc}} ${{matrix.posix}}
+    runs-on: ${{ matrix.os }}
+    env:
+      CC: ${{ matrix.cc }}
+      VERBOSE: 1
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          submodules: true
+      - run: sudo apt install libipc-run3-perl
+        if: ${{ matrix.os == 'ubuntu-latest' }}
+      - run: brew install autoconf automake libtool
+        if: ${{ matrix.os == 'macos-latest' }}
+      - run: ./bootstrap
+      - run: ./configure
+        env:
+          CFLAGS: -std=c99 -Wall -Wextra -Werror -Wno-unused-function -Wno-unused-parameter ${{ matrix.posix }}
+      - run: make
+      - run: make check
+
+  test-cmake:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    name: CMake build on ${{matrix.os}}
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          submodules: true
+      - run: cmake -DBUILD_TESTING=ON -V .
+      - run: cmake --build .
+      - run: ctest -V .