feat: Add '/', '?', and 'I' bindings to vim-normal mode (#1760)

Add 'I' binding to vim-normal mode (a la 'A' introduced in #1697) to
jump into vim-insert mode at the beginning of the search input.

Also add '/' and '?' bindings to vim-normal mode to clear the search
input and jump into vim-insert mode. This mimics the UX in e.g. `set -o
vi` (bash) or `bindkey -v` (zsh) mode when you are using 'k' and 'j' to
browse history lines and can type '/' or '?' to start a new search. (In
a perfect world it would target the search in the forward or backward
range starting at your current position in the history, but this is a
reasonable first step.)

0 files changed, 0 insertions, 0 deletions