feat/abstractiti (#340)

* progress on better error handling

* wiring onError callback through module loader and resolver

* fix error callbacks not being stored

* update onError to be record

* type alias

* wiring

* seems to work

* update error handling contract and wire more

* add command error builder

* fix merge

* progress on error handling

* naive onError handling, not tested

* progres

* proress

* progress on abstracting away iti

* seems to work

* fix tests

* better typings

* add doc

* abstracting iti

* remove onerror for this pr

* feat: better way to add dependencies

* fix tests

tsconfig.json

@@ -3,8 +3,6 @@
         "rootDir": "src",
         "strict": true,
         "esModuleInterop": true,
-        "noImplicitAny": true,
-        "experimentalDecorators": true,
         "strictNullChecks": true,
         "moduleResolution": "node",
         "skipLibCheck": true,