Add support for SABR

[unixfox]

This pull request is for adding SABR support to invidious.

Close #5263

TODO

• Add support for https://github.com/LuanRT/ytc-bridge
• Remove the dependency on Invidious companion (reuse work from trying to only use next endpoint for the major data #5003)
• Make loading the video player faster
• Fix glitch with loading icon in Shakajs
• Avoid using esm.sh for fetch the dependencies.
• Support extensions like SponsorBlock and DeArrow

[acheong08]

Shaka error 1006 happens on the DASH manifest path because itags don't match. They get filtered out for SABR (see unixfox@13f0943) but not here: https://github.com/unixfox/invidious/blob/13f094302392228d3db2a07ece67a6cf3db2b588/assets/js/sabr_player.js#L551-L557

Diff from Kira:

diff --git a/src/composables/useYoutubePlayer.ts b/src/composables/useYoutubePlayer.ts
index 9d5803c..7156e83 100644
--- a/src/composables/useYoutubePlayer.ts
+++ b/src/composables/useYoutubePlayer.ts
@@ -689,7 +689,12 @@ export function useYoutubePlayer() {
                                        `${videoInfo.streaming_data.dash_manifest_url}/mpd_version/7`;
                        } else {
                                try {
+                                       // Filter out formats with xtags (DRC variants) to prevent duplicate itag issues
+                                       // that cause "Could not determine current format" errors in the SABR adapter.
+                                       // This must match the filter applied to setServerAbrFormats() above.
+                                       // Note: format_filter is a reject filter - return true to EXCLUDE the format.
                                        const dashManifest = await videoInfo.toDash({
+                                               format_filter: (format) => !!format.xtags,
                                                manifest_options: {
                                                        is_sabr: true,
                                                        captions_format: "vtt",

Fixes it in my experience

Edit: turns out this fix causes audio to disappear from dubbed videos. This is what ended up fixing it: acheong08/invidious-sabr-player@54c6700