Add action for retrieving table record count

[s-akhtar-baig]

GitHub issue link: #30

Problem: Need a way to table record count.

Solution:

• Add recordcount command to retrieve number of records.
• Get table record count when listing files and listing tasks.

Testing:

• Unit tests
• Additional tests (add results below)

Documentation:

• Documentation not needed
• Updated README file
• Documentation prepared (provide link below)

[pakhig2]

Should we change it to ENDPOINT_URL ?

[pakhig2]

Same as above.