Add stage-app-pull-request workflow and drop-staging workflow

[tomoya0x00]

Issue

• close [Build] Deploy apk by using DeployGate or something #292

Overview (Required)

In this PR, I added the stage-app-pull-request workflow and the drop-staging workflow.

The original versions are below:

• https://github.com/DroidKaigi/conference-app-2022/blob/main/.github/workflows/StagePullRequest.yml
• https://github.com/DroidKaigi/conference-app-2022/blob/main/.github/workflows/DropStaging.yml

The stage-app-pull-request workflow will be run after Build workflow is succeeded. Also, the trigger for that workflow must be a PR.

The stage-app-pull-request workflow does the following:

• Upload an apk that is built in the trigger Build workflow to DeployGate

  • like this:
    

• Create a DeployGate distribution page for each PR branch

  • like this:
    

• Commit a DeployGate distribution page URL as a deployed URL to a PR

  • like this:
    

• Update distribution apk in a DeployGate distribution page if the page has already existed

The drop-staging workflow does the following:

• DeleteDeployGate a distribution page when an associated PR is closed

[github-actions]

Test Results

26 tests   26 ✔️  3m 49s ⏱️
  7 suites    0 💤
  7 files      0 ❌

Results for commit 0c2ae34.

♻️ This comment has been updated with latest results.

[takahirom]

Great work!