enable ffmpeg native h26x software decoders for all platforms (#7750)

* enable ffmpeg native h26x software decoders for all platforms

* h26x software decoders depend on hwcodec feature, so all platforms
  enable it, software h26x decoders are always available like vpx, no available check and no option
* ffmpeg:
	- build: mac arm64 build ffmpeg with my m1, others build with ci
	- version: win/linux use ffmpeg release/5.1, becaues higher version require higher nvidia driver,  other platforms use release/7.0
* test:
	- ios not test.
	- android: sometimes the screen will appear blurry, but it will recover after a while.
	- arm64 linux: test a example of hwcodec repo

Signed-off-by: 21pages <pages21@163.com>

* check hwcodec only when enabled and immediately when clicked enabled

Signed-off-by: 21pages <pages21@163.com>

---------

Signed-off-by: 21pages <pages21@163.com>

src/server/video_service.rs

@@ -715,9 +715,6 @@ fn handle_hw_encoder(
         #[cfg(feature = "hwcodec")]
         match _name {
             CodecName::H264VRAM | CodecName::H265VRAM => {
-                if !scrap::codec::enable_hwcodec_option() {
-                    return Err(());
-                }
                 let is_h265 = _name == CodecName::H265VRAM;
                 let best = HwRamEncoder::best();
                 if let Some(h264) = best.h264 {