Add host function for direct logging

[mattjohnsonpint]

Adds a new log host function, to be used for direct logging instead of parsing stderr/stdout. However, it leaves the old approach intact, to remain compatible until all projects are updated. We can remove the old approach later, or just leave it for WASI compliance.

Completes HYP-1384

Corresponding Functions PR: hypermodeinc/functions-as#102

[linear]

HYP-1384 Runtime host function for direct logging

Need a log function to receive input from console.log and related functions - rather than parsing the stdout and stderr streams.