zetaclient : Add a new thread which runs the supply check

[kingpinXD]

https://www.notion.so/zetachain/Zeta-supply-checks-3d0f82b36d294662a985ae5c8be61698?pvs=4

[kingpinXD]

The problem with PendingOutbound and PendingRevert

The Following uses PendingOutbound as an example, but we can also use a similar design for PendingRevert.

• Pending Outbound covers two stages of a CCTX.
  • Pending outbound: This is when the outbound scheduler has not picked up the TX, and the outbound has not been broadcasted.
  • Awaiting confirmation: This is when the TX is broadcasted and awaiting confirmation. The amount has already been minted or released. So, total supply or total locked values would already reflect this amount.