problem: termkey/driver-ti.c had its internal dependency upon unibilium
which would completely skip builtin terminfo defs.
solution: add termkey info to TerminfoEntry struct
NOTE: this disables a lot of named function keys which are present as
terminfo "keys" both are mostly unset in terminfo entries for modern
terminals, and also not recognized by nvim as mappable keys
anyway, except a few ones like `<undo>` which this still will keep.
We probably don't want to encode up to F63 keys forever. While only 12
physical keys are available on modern keybords, instead Chords using
F-keys are usually encoded as high key numbers, like <C-S-F3>
becoming <F39> . But reconsideirg that has implications for configuration
that is best done as a separate (breaking) change.
Skipped importing the following unit tests from libtermkey as they'd
require introducing a lot of unused code or require more effort to port
than is probably worth:
- 05read
- 12strpkey
- 20canon
- 40ti-override
