Add support for Bigscreen STT using androids inbuilt speech engine
Summary
Feature adds support for sending speech to text using androids inbuilt speech engine to Plasma Bigscreen for interaction with Mycroft AI voice applications. This feature is especially useful for users who do not have a mic enabled usb remote to interact with Voice Applications. The feature is disabled by default and requires optional permissions to be enabled, keeping in mind privacy and choice of the user.
Test Plan
Pair KDE Connect with Plasma Bigscreen. Give optional permission to Bigscreen Plugin to Record Audio. Open bigscreen remote plugin, click the mic but to start STT activity, text result is sent to paired bigscreen device.