Mainnet readiness: modularization and technical debt minimization

[cwgoes]

Objective:

• Modularize the codebase so that abstractions are clean & understandable, and establish a clear separation of concerns and appropriate dependency graph.
• Minimize technical debt so we don't need to deal with it in the future.

Dependencies:

• state crate refactor #2486
• governance crate refactor #2485
• token crates refactor #2484
• core refactor #2483
• Replace ad-hoc token transfer code with storage API code #2287
• Replace "ferveo-tpke" feature guards that are only being used to prevent wasm build breakages #802
• Remove all Ethereum bridge code #2548
• Remove ABCI++ shims #2549
• Remove all DKG linkage & block space allocator #2550
• Pre-mainnet shell rework/cleanup #2564
• Restructure codebase for a module-based separation of concerns #2111
• Cleanup / DRY PD controller #2553
• Remove the ability to update an account's VP #2554
• Remove parameters which are not parameters #2556
• governance: remove offline proposal code #2623
• VoteTx should fetch all the voter delegations on wasm #2523
• Refactor loading of gov proposals for execution #2630

[brentstone]

Closing here in favor of using the Project and Milestones