ci: enable GitHub actions (#123)

This PR was generated using Autosynth. 🌈

Synth log will be available here:
https://source.cloud.google.com/results/invocations/8807a95d-0d7c-4251-bd7e-a87799fc9f67/targets

Source-Link: googleapis/synthtool@98c5077
Source-Link: googleapis/synthtool@55cdc84

Author: yoshi-automation

.github/workflows/ci.yaml

@@ -0,0 +1,76 @@
+on:
+  push:
+    branches:
+    - master
+  pull_request:
+name: ci
+jobs:
+  units:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        java: [7, 8, 11]
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-java@v1
+      with:
+        java-version: ${{matrix.java}}
+    - run: java -version
+    - run: .kokoro/build.sh
+      env:
+        JOB_TYPE: test
+    - name: coverage
+      uses: codecov/codecov-action@v1
+      with:
+        name: actions ${{matrix.java}}
+  windows:
+    runs-on: windows-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-java@v1
+      with:
+        java-version: 8
+    - run: java -version
+    - run: .kokoro/build.bat
+      env:
+        JOB_TYPE: test
+  dependencies:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-java@v1
+      with:
+        java-version: 8
+    - run: java -version
+    - run: .kokoro/dependencies.sh
+  linkage-monitor:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-java@v1
+      with:
+        java-version: 8
+    - run: java -version
+    - run: .kokoro/linkage-monitor.sh
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-java@v1
+      with:
+        java-version: 8
+    - run: java -version
+    - run: .kokoro/build.sh
+      env:
+        JOB_TYPE: lint
+  clirr:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-java@v1
+      with:
+        java-version: 8
+    - run: java -version
+    - run: .kokoro/build.sh
+      env:
+        JOB_TYPE: clirr

.kokoro/build.bat

@@ -1,3 +1,3 @@
 :: See documentation in type-shell-output.bat
 
-"C:\Program Files\Git\bin\bash.exe" github/java-datastore/.kokoro/build.sh
+"C:\Program Files\Git\bin\bash.exe" %~dp0build.sh

synth.metadata

@@ -4,7 +4,7 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-datastore.git",
-        "sha": "b484256c30ac9117eb82688c801966b6ace856df"
+        "sha": "80823698416bbe08e2d22fbc81ec3709ad2552c8"
       }
     },
     {
@@ -19,7 +19,7 @@
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "ab883569eb0257bbf16a6d825fd018b3adde3912"
+        "sha": "98c50772ec23295c64cf0d2ddf199ea52961fd4c"
       }
     }
   ],