fix: more conformance tests

[guybedford]

This adds 8 new passing tests (I've already crossed them off in the corresponding issues).

• Resolves Jco transpile: implementation of wasi-clocks for Node.js #201.
• Resolves most of the CLI tests, with just the stdin tests remaining to do which I'll post as a follow-up PR.
• Adds a custom --jco-import option to jco run to allow for custom environment virtualization which should work as a pattern to be able to ensure the right environment for testing.
• Adds a new --jco-debug option to jco run which doesn't delete the temporary files (so they can be debugged) and also outputs the trace calls.
• Resolves a resources bug I hit on one of the cases, where the resource table wasn't being initialized.
• Updates the utf8 encoder to avoid reallocations, since these are unsupported in the test binaries.

Going to start adding this to my PRs: Progress: 27/98 tests

[manekinekko]

Adds a new --jco-debug option to jco run which doesn't delete the temporary files (so they can be debugged) and also outputs the trace calls.

Thank you!! I love this. This will same be a LOT of time :D