feat:add db url shortname

[codeErrorSleep]

Goctl generates models code, adds abbreviations for URLs.
This change is targeted at MySQL and Postgres
from
goctl model pg datasource --url postgres://xxx:xxx@xxx:5432/ecommerce -t books
to
goctl model pg datasource -u postgres://xxx:xxx@xxx:5432/ecommerce -t books

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.21%. Comparing base (2629636) to head (9fa17cf).
Report is 22 commits behind head on master.

Additional details and impacted files

see 253 files with indirect coverage changes