refactor out namada crate

[tzemanovic]

Describe your changes

Related to #2111 this PR refactors out the namada crate that will be removed. Two new crates are added:

• namada_vp with native VP interfaces and VP host fns implementations
• namada_vm with the VM and its wasm implementation

The native VPs from namada crate are moved to their respective crates using the approach outlined in https://hackmd.io/@heliax/r131cSMSR (note that existing cross system deps are not yet removed, only the ones in the moved native VPs):

• [x] governance (uses proof_of_stake::Read storage and token::Keys)
• [x] ethereum_bridge (uses token::Keys)
• [x] ibc (uses governance::Read, parameters::Keys + Read, token::Keys + Write and proof_of_stake::Read)
• [x] masp (uses governance::Read, parameters::Read) - moved into shielded_token
• [x] multitoken (uses governance::Read, parameters::Read) - moved into trans_token
• [x] parameters (uses governance::Read)
• [x] pgf
• [x] proof_of_stake (uses governance::Read)

Additionally:

• [x] dependency on namada_parameters crate in namada_state was removed with the same DI approach as above to allow the namada_parameters to depend on namada_vp to implement its native VP
• [x] mod namada::ledger::protocol is moved into namada_node::protocol
• [x] mod namada::vm::prefix_iter moved to namada_state::prefix_iter
• [x] fn dry_run_tx is moved into the node crate
• [x] mod control_flow has been moved from namada_sdk to namada_core (feature-guarded by non-default "control_flow" as it needs tokio)

Deps graph

The two highlighted crates are newly added:

Indicate on which release or other PRs this topic is based on

v0.40.0

• for reviews the most notable changes are in
  • new traits for systems in core
  • native VP implementations using these traits moved from namada crate into relevant system's crate
  • new crates/sdk/src/validation.rs that injects the dependencies for native VPs

Checklist before merging to draft

• [x] I have added a changelog
• [x] Git history is in acceptable state

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 59.05870% with 809 lines in your changes missing coverage. Please review.

Project coverage is 54.51%. Comparing base (1e21ae8) to head (1154023).

Files	Patch %	Lines
crates/ibc/src/lib.rs	14.72%	330 Missing :warning:
crates/shielded_token/src/vp.rs	0.00%	53 Missing :warning:
crates/node/src/shell/testing/node.rs	0.00%	48 Missing :warning:
crates/parameters/src/vp.rs	0.00%	43 Missing :warning:
crates/vm/src/wasm/run.rs	2.27%	43 Missing :warning:
crates/apps_lib/src/client/rpc.rs	0.00%	36 Missing :warning:
crates/node/src/bench_utils.rs	0.00%	35 Missing :warning:
crates/node/src/dry_run_tx.rs	75.65%	28 Missing :warning:
crates/node/src/protocol.rs	60.56%	28 Missing :warning:
crates/apps_lib/src/client/tx.rs	0.00%	21 Missing :warning:
... and 30 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3402      +/-   ##
==========================================
+ Coverage   53.66%   54.51%   +0.85%     
==========================================
  Files         322      323       +1     
  Lines      111871   113288    +1417     
==========================================
+ Hits        60035    61762    +1727     
+ Misses      51836    51526     -310     

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[tzemanovic]

rebased onto 0.40 and added ~~https://github.com/anoma/namada/pull/3402/commits/72b2282786509b93630cbc7788e911c4192b5ba0~~ ~~835061e~~ ~~4e5268b~~ a7b48c1 to move IBC impl out of the MASP VP

[tzemanovic]

@sug0 pls re-check this after the rebase - there's a new commit for MASP VP IBC dep a7b48c1

[tzemanovic]

rebased on 0.41.0

[tzemanovic]

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[tzemanovic]

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