* Able to authenticate user against IndieAuth. For #1273
* WIP server indieauth endpoint. For https://github.com/owncast/owncast/issues/1272
* Add migration to remove access tokens from user
* Add authenticated bool to user for display purposes
* Add indieauth modal and auth flair to display names. For #1273
* Validate URLs and display errors
* Renames, cleanups
* Handle relative auth endpoint paths. Add error handling for missing redirects.
* Disallow using display names in use by registered users. Closes#1810
* Verify code verifier via code challenge on callback
* Use relative path to authorization_endpoint
* Post-rebase fixes
* Use a timestamp instead of a bool for authenticated
* Propertly handle and display error in modal
* Use auth'ed timestamp to derive authenticated flag to display in chat
* don't redirect unless a URL is present
avoids redirecting to `undefined` if there was an error
* improve error message if owncast server URL isn't set
* fix IndieAuth PKCE implementation
use SHA256 instead of SHA1, generates a longer code verifier (must be 43-128 chars long), fixes URL-safe SHA256 encoding
* return real profile data for IndieAuth response
* check the code verifier in the IndieAuth server
* Linting
* Add new chat settings modal anad split up indieauth ui
* Remove logging error
* Update the IndieAuth modal UI. For #1273
* Add IndieAuth repsonse error checking
* Disable IndieAuth client if server URL is not set.
* Add explicit error messages for specific error types
* Fix bad logic
* Return OAuth-keyed error responses for indieauth server
* Display IndieAuth error in plain text with link to return to main page
* Remove redundant check
* Add additional detail to error
* Hide IndieAuth details behind disclosure details
* Break out migration into two steps because some people have been runing dev in production
* Add auth option to user dropdown
Co-authored-by: Aaron Parecki <aaron@parecki.com>
