Add SAResolvers, SADecoderFactory impl, Subgraph

[tomarsachin2271]

• Guide Files Added:

  • Added documentation for adding new SmartAccount and Paymaster providers.

• SmartAccountDecoderFactory Class:

  • Implemented the SmartAccountDecoderFactory class to streamline the handling of different SmartAccount types.

• Resolver Concept:

  • Introduced the concept of Resolvers within the Factory class.
  • The Factory class now iterates through each registered Resolver, executing them in parallel.
  • It determines which Resolver returns the appropriate SADecoder and then returns that decoder.

• BiconomySAResolver Class:

  • Added the BiconomySAResolver class for specific handling of Biconomy Smart Accounts.

• Subgraph Client:

  • Implemented a Subgraph client utilizing ApolloClient to check if userOp.sender belongs to Biconomy SA.

• Extracted types into different files:

  • Added type files for SmartAccount and Paymaster separately to have more clarity around different types