ci: #90 add CI workflow

[miquelbeltran]

ci: #90 add CI workflow

Description 📝

This PR adds GitHub CI jobs as described in #90

Type of change

• CI improvement

Updates

• Created .github/workflows/ci.yml
• Added jobs that run the following tasks:
  • ./gradlew app:lint: Lint check on the sample app
  • ./gradlew app:assembleDebug: Compile sample app
  • ./gradlew provider:lint Lint check on the Provider
  • ./gradlew provider:assembleDebug: Compile Provider
  • ./gradlew provider:test: Runs tests on Provider
  • ./gradlew spotlessCheck: Complete spotless check
• Run ./gradlew spotlessApply to fix formatting issues found by spotless
• Configured ci.yml to cancel running jobs when a new commit is pushed

Test plan 🧪

• CI job

Author to check 👓

• Project and all contained modules build
• Tested on appropriate devices/emulators and SDK versions
• Reviewed by another developer
• Appropriate documentation written (code comments, internal docs)

Reviewer to check ✔️

• Change has been tested on a device/emulator
• Code is written to standards
• Appropriate tests have been written (code comments, internal docs)

[miquelbeltran]

The thing I am not convinced is if the "spotless" format is the right one for us or not, because the format is different to the one from Android Studio, so maybe we want to revert the change in cddb91e and instead modify the spotless.gradle to match the formatting from Android Studio

[TheRealAgentK]

LGTM