Add caching for scanning repos

[bupd]

Add better loading

• Add the below example

total dirs present -- 20
no of git repos -- 18
adding repos to cache.

Another example

repos on cache -- 18 
no new repos found (or) new repos found -- 2
adding new repos to cache

do you want to be a cool kid (yes | no)
if yes specify where to store your config.

if any errors occur in storing the config. fallback to default config location.

falling back to default.  you are not a cool kid. survey says dumb kid.