Improve normal mode commands and yank

[christianparpart]

    I often try e.g. `yw`, `y$`, `ytx`, `yi"` (though the last two might be from a plugin) 

Originally posted by @cqexbesd in https://github.com/contour-terminal/contour/issues/969#issuecomment-1374945262

Actually, yi" is a standard motion from core vim (and working in Contour already). Not so sure about ytx, that should yank upu until the next x to the right on the current line. That's a good one.

I was surprised they don't work, because they work as v-commands, e.g. vw / v$ / vi". Going into implementing/fixing this might probably end up refactoring the normal mode commands a bit (for cleaner design).

Checklist of things to add

• [x] y{motion}
• [x] motion $
• [x] motion: [count]| (jump to column [count])
• [x] motion: %
• [x] motion: W
• [x] motion: B
• [x] motion: E
• [x] motion: [[ and ]]
• [x] motion: [] and ][
• [x] motion to jump to mark (usually used for prompts), maybe [m and ]m
• [x] motion: T{char}
• [x] motion: F{char}
• [x] motion: t{char}
• [x] motion: f{char}
• [x] motion: , (repeat last f/t/F/T [count] times into the other direction / reverse)
• [x] motion: ; (repeat last f/t/F/T [count] times)
• [ ] Test cases for vi motions, and select/yank operations
• [ ] Document somehwhere of what's supported.