* feat(variants): Add support for TXCO on TLORA_V2_1_6 devices
* chore: remove long comment
* feat(variants): Add tlora-v2-1-1_6-tcxo to build matrix
* feat(variants): Use RADIOLIB_NC as DIO1 pin for tlora_v2_1_16 with TXCO
* Use generic naming scheme, add variant to build envs
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Co-authored-by: Ben Meadors <benmmeadors@gmail.com>
Co-authored-by: code8buster <20384924+code8buster@users.noreply.github.com>
