[Toybox] [PATCH] vi: bug fixes

[Jarno Mäkipää]

Style cleanups:
Removing whitespaces at end of lines, hopefully reduces git am
warnings

Bug fixes:
fix segfault if file did not exist, now creates one empty line
fix insert mode text not showing on start of line
fix append on empty line
fix cursor move right on empty line
---
 toys/pending/vi.c | 203 ++++++++++++++++++++++++----------------------
 1 file changed, 107 insertions(+), 96 deletions(-)
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