Fix the detection of earpiece for non-cellular devices.

[winnuz]

Description

Fix the detection of earpiece for non-cellular devices.

Breakdown

• update in function "hasEarpiece"
• use "AudioDeviceInfo.TYPE_BUILTIN_EARPIECE" to detect earpiece

Validation

• test the library in Zebra TC52 device

Additional Notes

Zebra TC52, TC51, TC53 devices do not have telephony but they have built-in earpiece for VoIP use cases.
Zebra ET45 tablet device has telephony but does not have built-in earpiece.

Submission Checklist

• The source has been evaluated for semantic versioning changes and are reflected in gradle.properties
• The CHANGELOG.md reflects any feature, bug fixes, or known issues made in the source code

[usayplz]

Could you also fix logic when WiredHeadset is disconnected Earpiece never come back.
AudioSwitch.kt

Wrong logic on Line 105:
wasChanged = wasChanged || this.availableUniqueAudioDevices.add(Earpiece())

never call if WiredHeadset is disconnected: this.availableUniqueAudioDevices.add(Earpiece())

https://github.com/davidliu/audioswitch/blob/fb33b237aa50b3d1d2dea0e0695ecb7b38a98971/audioswitch/src/main/java/com/twilio/audioswitch/AudioSwitch.kt#L105