Rework resolver (#489)

* Rework IR and resolver to use nested lookup tables
* Integrate types into IR
* Make components prefer IR, slimmed down AST
* Implement `export *`
* Add `@lazy` annotation and remove `--noTreeShaking`
* Add `@start` annotation and remove magic `main`
* Related refactoring, cleanup and docs

tests/compiler/std/trace.ts

@@ -7,4 +7,5 @@ trace("four_int", 4, 1, 2, 3, 4);
 trace("five_int", 5, 1, 2, 3, 4, 5);
 trace("five_dbl", 5, 1.1, 2.2, 3.3, 4.4, 5.5);
 
+@start
 export function main(): void {}