Use only web3 as dependency at chainlink plugin and update the Plugin documentation at web3.js

[Muhammad-Altabba]

• Update web3 versions at the chainlink plugin.
• Use only web3 as dependency at the chainlink plugin.
• Update the Plugin documentation accordingly. Which involves:
  1. Only web3 module is used.
  2. Module Augmentation has been simplified.

[Muhammad-Altabba]

MRs:

• Update dependencies and fix tests for web3.js v4.0.1-rc.2 ChainSafe/web3.js-plugin-chainlink#26
• Use only web3 as dependency ChainSafe/web3.js-plugin-chainlink#27
• Update the Plugin documentation #6165
• Few touches on the Plugin Guid #6182