Ref https://git.opentalk.dev/opentalk/opentalk-devops/ot-setup/-/issues/80

Ref https://git.opentalk.dev/opentalk/opentalk-devops/ot-setup/-/issues/73

Ref https://git.opentalk.dev/opentalk/opentalk-devops/ot-setup/-/issues/72

Related to https://git.opentalk.dev/opentalk/opentalk-devops/ticket-inbox/-/issues/38

fixes Change URL for support.  Related to https://git.opentalk.dev/opentalk/opentalk-devops/ticket-inbox/-/issues/28

fixes Legal implementation.  Related to https://git.opentalk.dev/opentalk/opentalk-devops/ticket-inbox/-/issues/40

fixes GlitchTip implementation.  Related to https://git.opentalk.dev/opentalk/opentalk-devops/ticket-inbox/-/issues/39

- change OIDC_ISSUER default behavior

- enable TURN config for livekit

- add livekit config file option

- update livekit init, remove unused variables

- env var HELPDESK_URL added

- update default value for HELPDESK_URL to https://opentalk.eu/support

- update VIDEO_BACKGROUNDS default value to "empty"

- update container image tags

- Update README

add livekit init script
add livekit config
remove redis ENV var from controller service
update sample config
align example domain
update README
add docker extra host
remove livekit section
change PRODUCT_VERSION

add frontend redirectUris