Vocabulary changes (#51)

* Working on changes for vocabularies:

1. library-mode properties - used when a library is built, ignored when a library is used
2. read-only and dump-only schema properties

* Extensions & changes for oarepo-vocabularies package

* different loading of included schemas, changes for vocabularies

* nr fixes

* vocabulary changes

* tests fixed, upgrade to importlib

* 1.0.0dev8

* version bump

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "oarepo-model-builder"
-version = "1.0.0.dev8"
+version = "1.0.0.dev9"
 description = "An utility library that generates OARepo required data model files from a JSON specification file"
 authors = ["Miroslav Bauer <[email protected]>", "Miroslav Simek <[email protected]>"]
 readme = "README.md"