Added support for higher Gradle versions

[AppSolves]

Changes to be committed:

modified:   android/build.gradle
modified:   android/gradle/wrapper/gradle-wrapper.properties
modified:   example/android/app/build.gradle
modified:   example/android/build.gradle
modified:   example/android/gradle/wrapper/gradle-wrapper.properties
modified:   pubspec.yaml

• Upgraded gradle to 8.1
• Added namespace in build.gradle
• Updated version number to 2.2.5
• Updated kotlin version
• Changed comPileSdkVersion to 33

[milindgoel15]

Tried compiling a fork with your PR and it couldn't build. Do you know what's the problem?

build error logs

2: Task failed with an exception.
-----------
* What went wrong:
Failed to query the value of property 'buildFlowServiceProperty'.
> Could not isolate value org.jetbrains.kotlin.gradle.plugin.statistics.BuildFlowService$Parameters_Decorated@46399b58 of type BuildFlowService.Parameters
   > A problem occurred configuring project ':add_2_calendar'.
      > Could not resolve all files for configuration ':add_2_calendar:classpath'.
         > Could not find com.android.tools.build:gradle:8.1.
           Searched in the following locations:
             - https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/8.1/gradle-8.1.pom
             - https://repo.maven.apache.org/maven2/com/android/tools/build/gradle/8.1/gradle-8.1.pom
           Required by:
               project :add_2_calendar
      > Failed to notify project evaluation listener.
2
         > Could not get unknown property 'android' for project ':add_2_calendar' of type org.gradle.api.Project.

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
> Get more help at https://help.gradle.org.
==============================================================================

BUILD FAILED in 3s
Exception: Gradle task assembleDevDebug failed with exit code 1

[AppSolves]

Hello @milindgoel15, it seemed like there was an issue using the Android Gradle Plugin v8.1. The actual version number is 8.1.2. I made a new commit where I addressed the error. Try compiling the example app again, it should work now!

[diegogarciar]

It is working great, thank you!