Prints the absolute path of the worker SDK bundled with a language
package, for configuring editors, type checkers, go.mod replace
directives or javac -cp:
$ mix portals.sdk_path python
/app/_build/dev/lib/portals_python/priv/python
The path is the last line of output; when dependencies still need
compiling, Mix prints its own progress first, so scripts should take the
last line: $(mix portals.sdk_path java | tail -n 1).
The language's package (portals_python, ...) must be a dependency of
the current project. Supported languages: go, java, javascript, php, python, ruby.