feat: camera quality settings, audio processing toggles, config-seeded defaults

- Add camera video quality controls (resolution/framerate/bitrate/codec)
  to Settings > Video, mirroring the screen share settings UI
- Add audio processing toggles (echo cancellation, noise suppression,
  auto gain control) to Settings > Audio, replacing URL-param-only controls
- Display raw values inline on all sliders (framerate, bitrate, volume)
- Add config-seeded defaults: config.json media_quality values now seed
  Setting defaults for users who haven't explicitly set preferences
- Camera settings are applied when joining a call via ConnectionFactory

Signed-off-by: Ryan Emmick <ryanemmick4@gmail.com>

src/initializer.tsx

@@ -26,6 +26,7 @@ import {
 
 import { getUrlParams } from "./UrlParams";
 import { Config } from "./config/Config";
+import { seedSettingsFromConfig } from "./settings/settings";
 import { platform } from "./Platform";
 import { isFailure } from "./utils/fetch";
 import { initializeWidget } from "./widget";
@@ -220,6 +221,7 @@ export class Initializer {
       this.loadStates.config = LoadState.Loading;
       Config.init().then(
         () => {
+          seedSettingsFromConfig(Config.get().media_quality);
           this.loadStates.config = LoadState.Loaded;
           this.initStep(resolve);
         },