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/asc-constants.ts

@@ -1,5 +1,4 @@
 ASC_TARGET;
-ASC_NO_TREESHAKING;
 ASC_NO_ASSERT;
 ASC_MEMORY_BASE;
 ASC_OPTIMIZE_LEVEL;