feat: adding exoplayer for HDR playback

Currently MPV doesn't support HDR via external displays. giving people
the choice of HDR/limited ass sub support/SDR full sub support

Signed-off-by: Lance Chant <13349722+lancechant@users.noreply.github.com>

modules/mpv-player/src/MpvPlayer.types.ts

@@ -175,4 +175,28 @@ export type TechnicalInfo = {
   hwdec?: string;
   /** Estimated video output fps (mpv "estimated-vf-fps") */
   estimatedVfFps?: number;
+  // ---- Extended fields (primarily ExoPlayer-backed; MPV may fill some) ----
+  /** Derived HDR format: "SDR" | "HDR10" | "HDR10+" | "HLG" | null */
+  hdrFormat?: string;
+  /** Color space, e.g. "BT.709" / "BT.2020" */
+  colorSpace?: string;
+  /** Color range: "Limited" / "Full" */
+  colorRange?: string;
+  /** Color transfer: "SDR" / "ST2084 (PQ)" / "HLG" */
+  colorTransfer?: string;
+  /** Decoder path: "hardware" (MediaCodec) or "software" (FFmpeg extension) */
+  decoderType?: string;
+  /** Instantiated decoder name, e.g. "c2.amlogic.hevc.decoder" */
+  decoderName?: string;
+  /** Active audio channel count (2 = stereo, 6 = 5.1, 8 = 7.1) */
+  audioChannels?: number;
+  /** Active audio sample rate in Hz */
+  audioSampleRate?: number;
+  /**
+   * Raw codec tag from the container, e.g. "hev1.2.4.L153.B0". Encodes
+   * profile / tier / level / constraint bytes per ISO/IEC 14496-15. Power
+   * users can decode this manually; it's how Jellyfin's HEVC level cap
+   * (153 = Level 5.1) is checked against the file.
+   */
+  videoCodecs?: string;
 };