Support shortcut flags

[lf32]

Short Description

It's annoying while typing --about, --quiet, --verbose, --version ... all the time.

It will be easier if the software supports shortcut flags

Possible Labels

• new feature

Select Category

• Enhancement

Describe the Update

Add support for shortcut flags to make CLI usage

How This Feature will help you/your organization

It's will make CLI usage more efficient

Possible Solution/Implementation Details

support flags like

-A    for about 
-q    for quietness
-V    for version of scancode-toolkit
-v    for verbose output

Fixed by #2951