[CLOUDGA-25138] Show api keys associated to an allow list in LIST AL cmd

[bhupendray-yb]

Summary:

• [CLOUDGA-25138] Show api keys associated to an allow list in LIST AL cmd
• Remove FF for api key allow list

Output:

~/code/ybm-cli on CLOUDGA-25138-fix *6 ?6                                                                                                             took 27s at 10:35:21
> mb && ./ybm network-allow-list list
Name      Description                       Allow List          Clusters   API keys
now                                         103.175.100.75/32              test-key,hello
my-mac    Allow list for my local machine   103.175.100.49/32              vaccextvpe,admin-nal-1ff3

[bansal01yash]

LGTM, please run make doc as well to generate docs.