* Both encoding and decoding use fallback if first frame fails
* More aggresive max fail counter
* Update hwcodec, add judgement when length of the encoded data is zero, https://github.com/rustdesk/rustdesk-server-pro/discussions/382#discussioncomment-10525997
* Fix serde hwcodec config toml fails when the non-first vec![] is empty, https://github.com/toml-rs/toml-rs/issues/384, the config file is used for cache, when check process is not finished, the cache is used.
* Allow cm not start for pro user
Signed-off-by: 21pages <sunboeasy@gmail.com>
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