#55 Update Gradle to 8.4 and replace unmaintained plugin with Spotless plugin

[SingingBush]

this PR contains the following:

• Update gradle wrapper to 8.4 (requires numerous changes to gradle build files)
• Replace google-java-format with com.diffplug.spotless (which supports google-java-format as well)
• Add GitHub action to ensure builds with both JDK 11 and 17 (21 will require Gradle 9)
• Add Automatic-Module-Name to the manifest for photoslibraryapi

[SingingBush]

Is this project still maintained?

[chrisachard]

Since there has been the recent announcement of the new Picker API (https://developers.googleblog.com/en/google-photos-picker-api-launch-and-library-api-updates/) this library will be undergoing changes. We anticipate those changes to be available in another branch later this year, then those will be merged into the main branch on March 31, 2025.

[SingingBush]

ok thanks for the link. I was not aware of the Picker API. Any chance of the new work being JDK 11+ and having full JPMS support via module-info.java

[chrisachard]

I'm not sure, but I'll keep it mind as the library gets updated