Feat: Also run callbacks on outgoing telegrams, but filter them out b…

[marvin-w]

Description

Do trigger telegram callbacks also for outgoing telegrams for HA. For all other callbacks this is disabled by default and has to be explicitly enabled.

Fixes #497

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• I have performed a self-review of my own code
• The documentation has been adjusted accordingly
• The changes generate no new warnings
• Tests have been added that prove the fix is effective or that the feature works
• The changes are documented in the changelog
• The Homeassistant plugin has been adjusted in case of new config options

[coveralls]

Coverage increased (+0.004%) to 94.916% when pulling 2ca47f2 on marvin-w:feature/trigger_knx_event_on_outgoing into afa30c7 on XKNX:master.