refactor: pools command, make helpers work both in Node.js and browser

[fadeev]

• Removed helpers for testing, because we're no longer using them and migrating them for browser is a pain in the neck.
• Refactored balances, fees and tx tracking
• helpers can now be used from browser, which is nice

import { getBalances, trackCCTX, fetchFees } from "@zetachain/toolkit/helpers";

• added getPools to get info about liquidity in internal pools. This function was needed for two reasons: to display a table when talking about liquidity pools in the docs and as a prerequisite for a function, which will calculate if a transaction value is enough to cover the withdraw fee for omnichain contracts.

npx hardhat pools
┌─────────┬───────────────────────┬──────────┬──────────┐
│ (index) │         name          │  ZRC-20  │   ZETA   │
├─────────┼───────────────────────┼──────────┼──────────┤
│    0    │       'tMATIC'        │ '403.70' │ '376.06' │
│    1    │        'tBTC'         │ '31.70'  │  '0.00'  │
│    2    │        'tBNB'         │ '358.49' │ '332.25' │
│    3    │        'gETH'         │ '192.60' │ '404.00' │
│    4    │ 'USDC-mumbai_testnet' │  '0.00'  │  '0.00'  │
│    5    │ 'USDC-goerli_testnet' │  '0.00'  │  '0.00'  │
│    6    │  'USDC-bsc_testnet'   │  '0.00'  │  '0.00'  │
└─────────┴───────────────────────┴──────────┴──────────┘

[socket-security]

New, updated, and removed dependencies detected. Learn more about Socket for GitHub ↗︎

Packages	Version	New capabilities	Transitives	Size	Publisher
isomorphic-fetch	3.0.0	network	+5	557 kB	mattandrews
eventemitter3	5.0.1	None	+0	73.4 kB	lpinca
@zetachain/networks	2.3.0...2.4.3	None	+0/-0	26.3 kB	lucasjanon

🚮 Removed packages: [email protected]