fix(vvs-finance): add labels and xVVS token balance

[CronosLabsDev]

Description

• add xVVS app token balance
• add labels for auto vvs mine, farmsV2, farms, manual vvs mine (within farms) and mines

Checklist

• I have followed the Contributing Guidelines
• (optional) As a contributor, my Ethereum address/ENS is:
• (optional) As a contributor, my Twitter handle is: https://twitter.com/cronos_labs

How to test?

1. edit/create .env adding ENABLED_APPS="vvs-finance"
2. run pnpm dev to spin up nest server
3. visit dev endpoints below to see result of fetchers to integrate vvs-finance:

• http://localhost:5001/apps/vvs-finance/positions?groupIds[]=auto-vvs-mine&network=cronos
• http://localhost:5001/apps/vvs-finance/positions?groupIds[]=farm-v2&network=cronos
• http://localhost:5001/apps/vvs-finance/positions?groupIds[]=farm&network=cronos
• http://localhost:5001/apps/vvs-finance/positions?groupIds[]=mine&network=cronos
• http://localhost:5001/apps/vvs-finance/balances?addresses[]=<wallet_address>&network=cronos