* Add initial variant and platformio configuration for RAK WISMESHTAP V2
* Add initial variant and platformio configuration for rak wismesh tap v2
* Remove unnecessary Meshtastic build flags from rak_wismesh_tap_v2 configuration
* Enable LGFX button support in rak_wismesh_tap_v2 configuration
* Revert "Enable LGFX button support in rak_wismesh_tap_v2 configuration"
This reverts commit 2bd2c1a03b.
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Co-authored-by: Daniel.Cao <daniel.cao@rakwireless.com>