TGUI say: Upgrades chat input with modern features (#23907)

* initial stuff (broken)

* initial stuff (works)

* fix most other things

* fix thinking indicator

* file name moment

* contra review

* better logs

* snowball feedback

* expanded drag handles

* Update code/modules/tgui_input/say_modal/tgui_say_modal.dm

Co-authored-by: Contrabang <91113370+Contrabang@users.noreply.github.com>

* Update code/modules/tgui_input/say_modal/tgui_say_modal.dm

Co-authored-by: Contrabang <91113370+Contrabang@users.noreply.github.com>

* Drag handle

* fix missing colours

* TGUI rebuild (im clever)

* Make msay useable by admins again (i hope)

* fixed blacklist channel leaks due to lack of user eyes

* clear old TGUIsay macros on keybind update

* TGUI say tweaks

* Update code/modules/tgui_input/say_modal/tgui_say_modal.dm

* whisper is now a channel

* remove placeholder, shorten width

* tidies prefs, fix lightmode, refactor typing/thinking indicators

* clarify more prefs

* TG Typing Indicators and increace layer

* modifiers?

* makes the TGUI say macros serverside

* add checks for muted stuff

* dgamer review

* fix talk and type issue

* Update code/datums/keybindings/communication_keybinds.dm

Co-authored-by: Luc <89928798+lewcc@users.noreply.github.com>

* review and binary stuff

* Removes force say from TGUI say

* updated

* Apply suggestions from code review

Co-authored-by: Aylong <69762909+AyIong@users.noreply.github.com>

* remove verb

* le rebuild

* better behaviour on illegal entries

---------

Co-authored-by: Aylong <alexanderkitsa@gmail.com>
Co-authored-by: Contrabang <91113370+Contrabang@users.noreply.github.com>
Co-authored-by: GDN <Roanrichards1@Gmail.com>
Co-authored-by: Luc <89928798+lewcc@users.noreply.github.com>
Co-authored-by: Aylong <69762909+AyIong@users.noreply.github.com>

code/modules/client/preference/link_processing.dm

@@ -946,6 +946,10 @@
 				if("input_lists")
 					toggles2 ^= PREFTOGGLE_2_DISABLE_TGUI_LISTS
 
+				if("tgui_say_light_mode")
+					toggles2 ^= PREFTOGGLE_2_ENABLE_TGUI_SAY_LIGHT_MODE
+					user?.client?.tgui_say?.load()
+
 				if("ghost_att_anim")
 					toggles2 ^= PREFTOGGLE_2_ITEMATTACK