Prompt for installing / updating CLI tools

[mennenia]

I think we need to distinguish between installing your first cocoapod env (someone completely new to using CP), updating your current env, and wanting to start with a clean slate and doing a fresh install (overwrite current env). The last is probably not high on the feature requirement list, but I will include it for completeness.

(1) New user - first time install / experience
=> prompt installation.

Already covered here, and as far as I can see implemented and done ✅. Yay!

(2) CP user - first time install / experience
=> prompt update / no prompt if not required

A CP user is defined by already having an CP environment. This can either be updated (great way to nudge for that), or be left alone.

Sample idea:

With the confirmation prompt along the lines of:

"You already have a tool installed. This will update your existing configuration. / This will update Cocoapods to the latest and greatest. "

"If you need to keep your current installation, this will overwrite it. You may want to choose an alternate filename or directory. "

"Cancel | Update"

(3) CP / App user, wanting to start from scratch
=> a "fresh install" button somewhere

I know I've definitely been in this situation when I started developing. If, one day, there would be preferences, or otherwise a small button somewhere. Like previously mentioned though, this is very much at the bottom of the feature list.

Dev work required (probably) (I should dig around the code more!)

• detecting current environment
• detecting versioning / the need for CP CLI update
• the actual updating of the env (but I'm assuming this is the same as the overwrite)

Assets

• update copy (for banner, help, prompt)

Thoughts?