feat(server): tone-mapping (#3512)

* added tonemapping

* check for hdr in transcode policy

* merged video thumbnail and transcoding logic

* updated tests

* removed log

* added dashboard option, updated api

* `out_color_matrix` for sdr video thumbs, cleanup

* updated tests & styling

* refactored tonemapping setting

* fixed tests

* formatting

* added tests

* updated api

* set target npl higher for mobius and reinhard

* convert to nv12 before nvenc

* fix test

---------

Co-authored-by: Alex Tran <alex.tran1502@gmail.com>

mobile/openapi/test/system_config_f_fmpeg_dto_test.dart

@@ -56,6 +56,11 @@ void main() {
       // TODO
     });
 
+    // ToneMapping tonemap
+    test('to test the property `tonemap`', () async {
+      // TODO
+    });
+
     // TranscodePolicy transcode
     test('to test the property `transcode`', () async {
       // TODO