chore(ci): Migrate PR CI from travis-ci.org and circleci to GitHub Actions

Partially fix #6345, only PR portion, not nightly or releases.

Unlike travis, we're not caching our brew packages. `actions/cache` doesn't
update the cache on cache hit, making it hard to use a rolling cache like
before. We also don't know what cache key we should use before running, since
it relies on the live package list of brew.

Using a docker image containing brew packages seems like a better option if we
need the speedup going forward. ATM a full build with deps only takes about 12
minutes. Windows builds don't have this issue, since deps there are keyed off of
known versions in our repo.

Current Windows matrix form works, but causes a double-build on dep change due
to both debug/release rebuilding the release deps. Instead, should probably
separate the dep jobs, block build on the dep jobs, and update the cache on dep
jobs, guaranteeing a cache hit on build jobs?

Windows stage 1 and stage 2 can probably be recombined, if they were split due
to travis single build length limits, since GH actions allows much longer single
builds.

.github/workflows/test.yaml

@@ -0,0 +1,118 @@
+name: test
+on: pull_request
+jobs:
+  verify-commit-format:
+    name: Verify Commit Format
+    runs-on: ubuntu-18.04
+    env:
+      GITHUB_CONTEXT: ${{ github.event.pull_request.commits_url }}
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0 # so that we can see the full commit range
+      - name: Run
+        run: ./.travis/verify-commit-format.sh
+  build-docs:
+    name: Docs
+    runs-on: ubuntu-18.04
+    env:
+      DOXYGEN_CONFIG_FILE: doxygen.conf
+    steps:
+      - uses: actions/checkout@v2
+      - name: Run
+        run: ./.travis/build-docs.sh
+  build-gitstats:
+    name: Gitstats
+    runs-on: ubuntu-18.04
+    env:
+      GITSTATS_DIR: gitstats
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install gitstats
+        run: sudo apt-get install gitstats
+      - name: Run
+        run: ./.travis/build-gitstats.sh
+  build-qtox:
+    name: Linux
+    runs-on: ubuntu-18.04
+    env:
+      CC: gcc
+      CXX: g++
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install deps
+        run: sudo apt-get install ccache lcov
+      - name: Run
+        run: ./.travis/build-ubuntu-16-04.sh
+      - name: Code test coverage
+        run: |
+          # Create lcov report
+          lcov --directory _build --capture --output-file coverage.info
+          # Filter out system headers and test sources
+          lcov --remove coverage.info '/usr/*' '*/test/*' '*/*_autogen/*' --output-file coverage.info
+          # Upload report to codecov.io
+          bash <(curl -s https://codecov.io/bash) -f coverage.info || echo "Codecov did not collect coverage reports"
+  build-osx:
+    name: macOS
+    runs-on: macos-10.15
+    env:
+      TRAVIS: true
+      TRAVIS_BUILD_DIR: ${{ github.workspace }}
+    steps:
+      - uses: actions/checkout@v2
+      - name: homebrew
+        run: brew upgrade && brew bundle --file ./osx/Brewfile
+      - name: Run
+        run: ./.travis/build-osx.sh
+  APPIMAGE:
+    name: AppImage
+    runs-on: ubuntu-18.04
+    env:
+      TRAVIS_TAG:
+      TRAVIS_COMMIT: ${{ github.sha }}
+    steps:
+      - uses: actions/checkout@v2
+      - name: Run
+        run: ./appimage/build-appimage.sh
+  FLATPAK:
+    name: Flatpak
+    runs-on: ubuntu-18.04
+    steps:
+      - uses: actions/checkout@v2
+      - name: Run
+        run: ./flatpak/build-flatpak.sh
+  win:
+    name: Windows
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        arch: [i686, x86_64]
+        type: [debug, release]
+    env:
+      BUILD__: ${{ matrix.arch }}
+      BTYPE__: ${{ matrix.type }}
+    steps:
+      - uses: actions/checkout@v2
+      - name: Cache dependencies
+        uses: actions/cache@v2
+        with:
+          path: cache
+          key: deps-${{ matrix.arch }}-${{ hashFiles('windows/cross-compile/build.sh') }}-${{ hashFiles('.travis/build-windows.sh') }}
+      - name: Install deps
+        run: |
+          sudo apt-get update
+          sudo apt-get install zip tree
+      - name: Deps build stage 1
+        run: |
+          ./.travis/build-windows.sh "$BUILD__" "release" "cache/${BUILD__}" stage1
+      - name: Deps build stage 2
+        run: |
+          ./.travis/build-windows.sh "$BUILD__" "release" "cache/${BUILD__}" stage2
+          ls -al cache
+      - name: qTox build
+        run: |
+          ./.travis/build-windows.sh "$BUILD__" "$BTYPE__" "cache/${BUILD__}" stage3
+      - name: Debug info
+        run: |
+          ls -al ~/
+          tree ~/project/workspace -L 4

.travis/verify-commit-format.sh

@@ -20,4 +20,6 @@
 set -eu -o pipefail
 
 # Verify commit messages
+readarray -t COMMITS <<<$(curl -s ${GITHUB_CONTEXT} | jq -r '.[0,-1].sha')
+TRAVIS_COMMIT_RANGE="${COMMITS[0]}..${COMMITS[1]}"
 bash ./verify-commit-messages.sh "$TRAVIS_COMMIT_RANGE"