Initial CI setup test

Added code coverage report generation (for future CI stuff)
Fixed a flaky unit test

.drone.jsonnet

@@ -0,0 +1,70 @@
+// Intentionally doing a depth of 2 as libSession-util has it's own submodules (and libLokinet likely will as well)
+local clone_submodules = {
+  name: 'Clone Submodules',
+  commands: ['git fetch --tags', 'git submodule update --init --recursive --depth=2']
+};
+
+// cmake options for static deps mirror
+local ci_dep_mirror(want_mirror) = (if want_mirror then ' -DLOCAL_MIRROR=https://oxen.rocks/deps ' else '');
+
+[
+  // Unit tests (PRs only)
+  {
+    kind: 'pipeline',
+    type: 'exec',
+    name: 'Unit Tests',
+    platform: { arch: 'amd64' },
+    trigger: { event: { exclude: [ 'push' ] } },
+    steps: [
+      clone_submodules,
+      {
+        name: 'Run Unit Tests',
+        image: 'registry.oxen.rocks/lokinet-ci-android',
+        commands: [
+          './gradlew testPlayDebugUnitTestCoverageReport'
+        ],
+      }
+    ],
+  },
+  // Validate build artifact was created by the direct branch push (PRs only)
+  {
+    kind: 'pipeline',
+    type: 'exec',
+    name: 'Check Build Artifact Existence',
+    platform: { arch: 'amd64' },
+    trigger: { event: { exclude: [ 'push' ] } },
+    steps: [
+      {
+        name: 'Poll for build artifact existence',
+        commands: [
+          './Scripts/drone-upload-exists.sh'
+        ]
+      }
+    ]
+  },
+  // Debug APK build (non-PRs only)
+  {
+    kind: 'pipeline',
+    type: 'exec',
+    name: 'Debug APK Build',
+    platform: { arch: 'amd64' },
+    trigger: { event: { exclude: [ 'pull_request' ] } },
+    steps: [
+      clone_submodules,
+      {
+        name: 'Build',
+        image: 'registry.oxen.rocks/lokinet-ci-android',
+        commands: [
+          './gradlew assemblePlayDebug'
+        ],
+      },
+      {
+        name: 'Upload artifacts',
+        environment: { SSH_KEY: { from_secret: 'SSH_KEY' } },
+        commands: [
+          './Scripts/drone-static-upload.sh'
+        ]
+      },
+    ],
+  }
+]