Document the target runner options

[ecraig12345]

Add types for constructor and target options for all built-in target runners, and update the TargetRunnerPickerOptions and TargetConfig.options docs to at least tell what the proper types are for a given target. (Fixing this properly would likely require a much more complicated setup with generic types for each built-in runner and any custom runners...)

Adding constructor options types and using them when generating the default TargetRunnerPickerOptions also revealed a bug: the lack of types had allowed a naming mismatch, so nodeOptions were not actually being passed through to NpmScriptRunner... The internal function runnerPickerOptions() which formerly had the bad code has also been renamed getBuiltInRunners() for clarity.

Also update lage's own custom worker runners under scripts/workers to use the new types.