Custom CDN support

3 fields named Custom Addr, Custom Host and Custom SNI added to panel settings in order to be set by Fastly or GCore settings. The configs will be added to Normal subscriptions for Xray, Clash and Sing-box with C flag, like VLESS C. Custom Addr should be corresponding CDN's addresses and can be domain, IPv4 and IPv6 or a desired combination separated by comma like:

speedtest.net , [2a04:4e42:200::731] , 151.101.66.219

[!IMPORTANT] 1- IPv6 should be wrapped in [ ] as is in the example. 2- Sometimes Allow Insecure should be activated manually in order to work on TLS ports in clients, This feature cannot be set via subscription. 3- It only works on port 443 and 80 for now.

Hiddify Fragment subscription

Added supscription to Fragment section, however there are some limitations:

[!NOTE] 1- Remote DNS and Local DNS are not affected by panel, Hiddify app rewrites them! Please set remote DNS to a DOH, otherwise configs won't work. 2- different Fragment packets won't apply on this subscription, there is only 1 mood (tlshello) available on Hiddify Singbox fragment. Other panel settings will be applied.

Improvements

• Revised Xray Fragment configs to better support chaining.
• Refactored.

Bug Fixes

• Solved Pre-resolve DOH in config generation process to avoid Worker DOH fetch rate limit.