Special keys affect modifiers and send specific LGLW codes
Other keys send the X KeySym for the key
Remove unused key hooks
Add queued mouse warps to redraws

FocusIn/FocusOut simply to see them in the log
EnterNotify/LeaveNotify are basically complete
MotionNotify is basically complete
ButtonPress/ButtonRelease are basically complete

lglw_mouse_grab is implemented but unable to test currently
lglw_mouse_ungrab is basically complete
lglw_mouse_warp is implemented but unable to test currently
lglw_mouse_cursor_show is basically complete, perhaps could have the cursor refactored to the struct

vst2_lglw_debug_plugin extracted, makefile made
vst2_debug_host temporarily using this debug plugin
vst2_debug_host Linux support for XWindows, _XEventProc
Temporary logger change to avoid crashes (needs investigating)

LGLW for Linux:
Include necessary X and GL headers
Temporary static log file and XErrorHandler for debugging
Many logging statements
loc_create_hidden_window implemented and working
loc_destroy_hidden_window implemented and working
lglw_window_open implemented and working
lglw_window_resize implemented and untested
lglw_window_close implemented and working
lglw_window_show implemented and untested
lglw_window_hide implemented and untested
lglw_window_is_visible is implemented and untested
lglw_window_size_get is implemented and untested
lglw_redraw is implemented, but possible wrongly
lglw_glcontext_push implemented and working
lglw_glcontext_pop implemented and working
lglw_swap_buffers implemented and working
lglw_swap_interval_set implemented and untested