[Toybox] vi: fixes and small cleanup

[Jarno Mäkipää]

Hello

Fix annoying first line delete bug, and some tidying up.


fix: first line delete
fix: delete with e move
fix: statusline 1 row lower, remove eol
cleanup: use dlist_pop on delete
cleanup: move globals into GLOBALS
---
 toys/pending/vi.c | 517 ++++++++++++++++++++++------------------------
 1 file changed, 251 insertions(+), 266 deletions(-)
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