Add TRIGGERcmd integration (#121268)

* Initial commit with errors

* Commitable

* Use triggercmd user id as hub name

* Validate the token

* Use switch type, no trigger yet

* Working integration

* Use triggercmd module instead of httpx

* Add tests for triggercmd integration

* Add triggercmd to requirements_test_all.txt

* Add untested triggercmd files to .coveragerc

* Implement cgarwood's PR suggestions

* Address PR feedback

* Update homeassistant/components/triggercmd/config_flow.py

Co-authored-by: Robert Resch <robert@resch.dev>

* Update homeassistant/components/triggercmd/hub.py

Co-authored-by: Robert Resch <robert@resch.dev>

* Update homeassistant/components/triggercmd/strings.json

Co-authored-by: Robert Resch <robert@resch.dev>

* Update homeassistant/components/triggercmd/hub.py

Co-authored-by: Robert Resch <robert@resch.dev>

* Get user id via triggercmd module, and better check for status 200 code

* PR feedback fixes

* Update homeassistant/components/triggercmd/switch.py

Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

* Update homeassistant/components/triggercmd/switch.py

Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

* More PR feedback fixes

* Update homeassistant/components/triggercmd/config_flow.py

Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

* Update homeassistant/components/triggercmd/strings.json

Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

* Update homeassistant/components/triggercmd/switch.py

Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

* More PR feedback fixes

* Update tests/components/triggercmd/test_config_flow.py

Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

* Changes for PR feedback

* Changes to address PR comments

* Fix connection error when no internet

* Update homeassistant/components/triggercmd/__init__.py

Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

* Update homeassistant/components/triggercmd/config_flow.py

Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

* Update homeassistant/components/triggercmd/config_flow.py

Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

* Update homeassistant/components/triggercmd/config_flow.py

Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

* Update tests/components/triggercmd/test_config_flow.py

Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

* Updates for PR feedback

* Update tests/components/triggercmd/test_config_flow.py

---------

Co-authored-by: Robert Resch <robert@resch.dev>
Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

homeassistant/components/triggercmd/const.py

@@ -0,0 +1,4 @@
+"""Constants for the TRIGGERcmd integration."""
+
+DOMAIN = "triggercmd"
+CONF_TOKEN = "token"