[Utility] Use TreeStore as source of truth

[h5law]

Description

Summary generated by Reviewpad on 26 Jul 23 11:24 UTC

This pull request includes the following changes:

1. In the trees.go file:

   • Added a new method Prove that generates and verifies a proof against a tree name stored in the TreeStore.
   • Updated the GetTreeHashes method to exclude the root tree from the map of tree names to their root hashes.

2. In the treestore_module.go file:

   • Added a new method Prove that generates and verifies a proof against a tree with a matching name.
   • No other changes have been made to the existing methods in the file.

3. In the transaction_test.go file:

   • Modified the import statements to use different package names.
   • Modified the test cases TestHandleTransaction_ErrorAlreadyInMempool, TestHandleTransaction_ErrorAlreadyCommitted, and TestHandleTransaction_BasicValidation.
   • Modified the function prepareEmptyIndexedTransaction.
   • Changed some variable names.

4. In the ibc_msg_mempool_test.go file:

   • Added a new test function TestHandleMessage_ErrorAlreadyCommitted.
   • Added environment preparation code, code for indexing a test transaction, and handling the error.
   • Modified the error handling code.

5. In the utility/transaction.go file:

   • Added an import statement for the github.com/pokt-network/pocket/shared/crypto package.
   • Updated the assignment of the txHash variable.
   • Updated the condition for checking if the transaction is already in the mempool.
   • Updated the call to u.GetBus().GetPersistenceModule().TransactionExists.
   • Updated the check for the existence of the transaction.

6. In the persistence/trees/trees_test.go file:

   • Updated the package imports.
   • Added a new test function TestTreeStore_Prove and several test cases.
   • Updated the treeStore struct and the existing test function.

7. In the persistence_module.go file:

   • Added a new method TransactionExists and commented out the old method.

Please let me know if you would like a more detailed review of any specific part of the diff.

Issue

Fixes #875

Type of change

Please mark the relevant option(s):

• New feature, functionality or library
• Bug fix
• Code health or cleanup
• Major breaking change
• Documentation
• Other

List of changes

• Update TransactionExists to use TreeStore
• Add Prove method to TreeStore
• Update tests

Testing

• make develop_test; if any code changes were made
• make test_e2e on k8s LocalNet; if any code changes were made
• e2e-devnet-test passes tests on DevNet; if any code was changed
• Docker Compose LocalNet; if any major functionality was changed or introduced
• k8s LocalNet; if any infrastructure or configuration changes were made

Required Checklist

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added, or updated, godoc format comments on touched members (see: tip.golang.org/doc/comment)
• I have tested my changes using the available tooling
• I have updated the corresponding CHANGELOG

If Applicable Checklist

• I have updated the corresponding README(s); local and/or global
• I have added tests that prove my fix is effective or that my feature works
• I have added, or updated, mermaid.js diagrams in the corresponding README(s)
• I have added, or updated, documentation and mermaid.js diagrams in shared/docs/* if I updated shared/*README(s)

[Olshansk]

Just a few nits

[Olshansk]