Code Linter for non-supported constructs

[michbarsinai]

Some options in Rhino cannot be used in BPjs, due to the latter's heavy reliance on continuation serializations. For example:

• as iterators can't be serialized, any bp.sync in a .forEach call will fail
• arrow functions can't be serialized (no bp.sync there either)
• Conditional constructs can't be serialized

To prevent developers from stumbling over these bugs, we need a linter that will warn them when they do this. We also expect the list to be dynamic, so the deign need to support easy addition and removal of items.