Add gradle templates for XRP (#595) #380

The following actions uses node12 which is deprecated and will be forced to run on node16: wpilibsuite/import-signing-certificate@v1, wpilibsuite/xcode-notarize@v1. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

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