Add intelli-shell

[lasantosr]

New App Submission

• [x] I've read the contribution guidelines.

Repo or homepage link: https://github.com/lasantosr/intelli-shell

Description: Bookmark commands with placeholders and search or autocomplete at any time.

Why I think it's awesome: As a software delevloper, there are commands that I need to use from time to time and tend to forget the exact syntax. I was missing a place to save those and be able to search later, that's why this utility was born. Also, when executing usual daily commands (which might be long) it saves time by autocompleting and suggesting common values for placeholders.

[lasantosr]

Hey @jneidel, what's needed to merge the PR?