This is a manual forward-port of #8944 and related fixes from v0.35.x.
One difference of note is that the CheckTx response messages no longer have a
field to record an error from the ABCI application. The code is set up so that
these could be reported directly to the CheckTx caller, but it would be an API
change, and right now a bunch of test plumbing depends on the existing semantics.
Also fix up tests relying on implementation-specific mempool behavior.
- Commit was setting the expected mempool size incorrectly.
- Fix sequence test not to depend on the incorrect size.
Adds a simple property test to the `clist` package. This test uses the [rapid](https://github.com/flyingmutant/rapid) library and works by modeling the internal clist as a simple array.
Follow up from this mornings workshop with the Regen team.
## Description
Internalize some libs. This reduces the amount ot public API tendermint is supporting. The moved libraries are mainly ones that are used within Tendermint-core.
