Add CLI for bmp configdb entity Enable/Disable

[FengPan-Frank]

Work item tracking Microsoft ADO (number only):27353337

What I did

Add CLI for bmp configdb entity Enable/Disable.

How I did it

Add python related code for Get/Set configdb entity, which is on https://github.com/sonic-net/sonic-buildimage/pull/18530

How to verify it

Unite test.

Previous command output (if the output of a command-line utility has changed)

New command output (if the output of a command-line utility has changed)