Mouse support via DEC Locator mode

[gwpl]

I tried in ttyd on Linux running and mouse was not detected:

Drawing Example This example suggests how to implement the interaction among SIXEL terminals and pointer devices. https://github.com/saitoha/libsixel/tree/master/examples/drawing

Not sure if problem is in example or in xterm.js or ttyd, so making ticket on each repo and cross linking:

https://github.com/tsl0922/ttyd/issues/1422 https://github.com/xtermjs/xterm.js/issues/5310 https://github.com/saitoha/libsixel/issues/186 (I never know what's the right way of making issue that are across repositories 🙈 , if there is any "right way")

[gwpl]

As I've read in updates in https://github.com/xtermjs/xterm.js/issues/5310#event-16313189145 and https://github.com/xtermjs/xterm.js/issues/5311#issuecomment-2659592982 ,

it look like your example is using some old mouse encoding and maybe new should be considered? If I read responses correctly some examples could be: X10, SGR and SGR-PIXEL

I've forwarded responde to libsixel library : https://github.com/saitoha/libsixel/issues/186#issuecomment-2660443061