Issue title: [feature request]: allow disabling screenshot sound
 Issue body: Example commits from spark os:
https://github.com/Spark-Rom/frameworks_base/commit/b12faaab3f0057b152d15e659ace5d1d0839ba7b
https://github.com/Spark-Rom/packages_apps_Settings/commit/77a143ecf1693aef4a9c3aa64b613fbdfc8a8fef

 Comments: 
 Comment 0: WIP in https://github.com/crdroidandroid/android_frameworks_base/pull/868
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