Imports (file imports)

[pouya-eghbali]

An import pattern should be added to the lexer, rules should be written for parser and generator, and the necessary runtime (if needed) should be created.

• Add import pattern in core/patterns.js
• Add from pattern in core/patterns.js
• Add parser rules in core/clio.beef
• Add generator rules in core/generator.js
• Add required builtins and runtime in core/internals

Import statement should work with below patterns:

import * from path
import name1 name2 name3 from path
import path
import name1 as name2 from path
import path as name

For beef files, there's a vscode addon hosted here:
https://github.com/pouya-eghbali/bean/tree/master/vscode-beef

[pouya-eghbali]

import name from path
import name1 name2 from path

works, others are not implemented.

[pouya-eghbali]

import * from path
import path

should work now (haven't pushed yet)