Android use out-of-date .so files

[wiiznokes]

mergeDebugJniLibFolders and mergeReleaseJniLibFolders will be treated as up to date, even when the .so files change in "$buildDir/rustJniLibs/android".

Chat GPT say it can be fixed if we add this path as input of the task.

workarround:

tasks.whenTaskAdded {
    if (name == "mergeDebugJniLibFolders" || name == "mergeReleaseJniLibFolders") {
        outputs.upToDateWhen { false }
        dependsOn("cargoBuild")
    }
}

[str4d]

Duplicate of #118.