[Utility] Account Logic - Send and Receive Funds - Add Tx Fees to Mempool

[jessicadaugherty]

Objective

Add tx fees from all send txs to mempool. Blocked by #325

Origin Document

The foundations for sending transactions were built out here but they do not include adding tx fees to the mempool.

Goals

• Add more production ready functionality for sending E2E txs in localnet and devnet

Deliverable

• Move tx fees with funds to mempool
• Store tx fees with funds in mempool

Non-goals / Non-deliverables

• Implementing "unhappy path" for save points

General issue deliverables

• Update the appropriate CHANGELOG
• Update any relevant READMEs (local and/or global)
• Update any relevant global documentation & references
• If applicable, update the source code tree explanation
• If applicable, add or update a state, sequence or flowchart diagram using mermaid

[Optional] Testing Methodology

• Task specific tests: make ...
• All tests: make test_all
• LocalNet: verify a LocalNet is still functioning correctly by following the instructions at docs/development/README.md

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Creator: @jessicadaugherty

[Olshansk]

@jessicadaugherty Given the updated description of #325, I believe we can close this out as a duplicate. Wdyt?

[jessicadaugherty]

@Olshansk aligned