Add config flow to frontier_silicon (#64365)

* Add config_flow to frontier_silicon

* Add missing translation file

* Delay unique_id validation until radio_id can be determined

* Fix tests

* Improve tests

* Use FlowResultType

* Bump afsapi to 0.2.6

* Fix requirements_test_all.txt

* Stash ssdp, reauth and unignore flows for now

* Re-introduce SSDP flow

* hassfest changes

* Address review comments

* Small style update

* Fix tests

* Update integrations.json

* fix order in manifest.json

* fix black errors

* Apply suggestions from code review

Co-authored-by: epenet <6771947+epenet@users.noreply.github.com>

* Address review comments

* fix black errors

* Use async_setup_platform instead of async_setup

* Address review comments on tests

* parameterize tests

* Remove discovery component changes from this PR

* Address review comments

* Apply suggestions from code review

Co-authored-by: epenet <6771947+epenet@users.noreply.github.com>

* Add extra asserts to tests

* Restructure _async_step_device_config_if_needed

* Add return statement

* Update homeassistant/components/frontier_silicon/media_player.py

Co-authored-by: epenet <6771947+epenet@users.noreply.github.com>

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Co-authored-by: epenet <6771947+epenet@users.noreply.github.com>