HA Discovery

[effelle]

Description:

Changelog:

• New multipress buttons are now correctly supported;
• Discovery will use the name of module/template instead of FRIENDLYNAME1 as device name;
• When SetOption19 and SetOption73 are active at the same time (buttons discovery) the topics generated by the latter will be suppressed to avoid duplicated MQTT messages.

Related issue (if applicable): fixes HA issue 34432

Checklist:

• The pull request is done against the latest dev branch
• Only relevant files were touched
• Only one feature/fix was added per PR.
• The code change is tested and works on core Tasmota_core_stage
• The code change pass travis tests. Your PR cannot be merged unless tests pass
• I accept the CLA.