Build: Upgrade gradle to 8.1.1 (1/2)

Release Notes: https://docs.gradle.org/8.1.1/release-notes.html
Command: ./gradlew wrapper --gradle-version=8.1.1
--distribution-type=all

------------------------------------------------------------------------

FYI: You will notice that the associated 'gradle-wrapper.jar', 'gradlew'
and 'gradlew.bat' files are not updated. This is because of the breaking
changes that this upgrade introduces, including the 'AGP' upgrade and
its associated breaking changes (namespace, build option, etc). As such,
this Gradle upgrade command is only half done.

PS: When all the breaking changes are resolved, this Gradle command will
be issued again, which should fully complete this upgrade.

Author: ParaskP7

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.4.2-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.1.1-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists