Add installer downloader and in-app upgrades backend #18155

Job	Run time
Prepare	4s
Build app	9m 29s
Build instrumented test packages (app, assembleOssProdAndroidTest, android/app/build/outputs/apk)	6m 42s
Build native (x86_64, X86_64)	6m 10s
Build instrumented test packages (mockapi, :test:mockapi:assemble, android/test/mockapi/build/out...	11m 46s
Build native (x86, X86)	5m 42s
Run lint and test tasks (testDebugUnitTest -x :test:arch:testDebugUnitTest :app:testOssProdDebugU...	10m 8s
Build instrumented test packages (e2e, :test:e2e:assemble, android/test/e2e/build/outputs/apk)	6m 59s
Run lint and test tasks (:test:arch:test --rerun-tasks)	4m 16s
Build native (arm64-v8a, Arm64)	5m 39s
Run lint and test tasks (detekt)	2m 54s
Build native (armeabi-v7a, Arm)	5m 53s
Run lint and test tasks (lint)	13m 2s
Run instrumented e2e tests	0s
Run instrumented tests (app, android/app/build/outputs/apk, 1)	3m 7s
Run firebase tests	0s
Run instrumented tests (mockapi, android/test/mockapi/build/outputs/apk, 1)	2m 34s
	1h 34m 25s

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