feat: cache simnet remote metadata

[hugoclrd]

Description

In the context of mainnet execution simulation (MXS), the simnet fetches a lot of data. This data is immutable and can easily be cached.
This PR only stores the metadata, making the MXS already way faster.
In future work, we could also cache all of the marf values or add an option to do so.

The FileSystem handling strategy, especially for wasm, is different from other approaches existing in the repo. But it's simpler and should be the proferred strategy from now on

• until now, we were passing a WASMFileAccessor from JS to Rust to handle fs operation. It was trciky to get this down to the datastore, and we needed the FS to be handle synchronously.
• we are instead directly:
  • directly accessing node fs in the context of ndoe.js
  • or setting up a globally avaialble vfs() function in the context of web browser.

See this code:

clarinet/components/clarity-repl/src/repl/remote_data/fs/mod.rs

Lines 6 to 14 in a5866c8

	#[cfg(all(target_arch = "wasm32", feature = "web"))]
	mod browser;
	#[cfg(all(target_arch = "wasm32", feature = "web"))]
	pub use browser::*;
	#[cfg(all(target_arch = "wasm32", not(feature = "web")))]
	mod node;
	#[cfg(all(target_arch = "wasm32", not(feature = "web")))]
	pub use node::*;

[codecov]

Codecov Report

Attention: Patch coverage is 95.94595% with 3 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
components/clarinet-files/src/lib.rs	80.00%	1 Missing ⚠️
components/clarity-repl/src/repl/datastore.rs	97.22%	1 Missing ⚠️
...nts/clarity-repl/src/repl/remote_data/fs/native.rs	92.30%	1 Missing ⚠️

📢 Thoughts on this report? Let us know!

[tippenein]

Looks good! This seems like it’ll be useful for other optimizations for sure