[Feature] Enhance ctrl-t behaviour in bash

[eli-percepto]

Implement the following ctrl-t behaviour:

1. Change the default setting (current dir) to present first the files and directories of depth 0 in order of decreasing modification time (as in ls -t1)
2. If the cursor follows immediately a word which is a path to an existing dir, fzf this dir instead of the current.

PR #3918

[phanirithvij]

1. already works for fish shell, but not for bash

[eli-percepto]

I've opened this PR
#3918
What do you tihnk?

[phanirithvij]

I haven't had the time to test it out. will check it out and get back to you.

just fyi I am just a regular fzf user.