FEAT: add faster way to copy db/table name, and add table colum description on the mouse hover

[MisterChangRay]

Is your feature request related to a problem? Please describe.

on the table colum, use ctrl+c for copy table colum name, but on the table view, this way is not work.

every time I try to copy table name, i was open generator table ddl for copy name; and view colum description

Describe the solution you'd like A clear and concise description of what you want to happen.

Describe alternatives you've considered A clear and concise description of any alternative solutions or features you've considered.