feat_py(liman_openapi): parse secureSchemes

refactor_py(liman_openapi): split schemas

feat(liman_core): add dependency injection

feat_py(liman_core): add pre and post execution hooks for NodeActor

feat_py(liman_core): implement CredentialsProvider

refactor_py(liman_core): move noop function to utils

feat_py(liman_core): make strict=True by default

docs: add separated section for CredentialsProvider component

docs: add root python docs page

docs: remove unused import

docs: add python refrence

build: add script for building python docs

docs(liman_core): add docstrings

feat_py(liman_core): support building python reference

docs: setup griffe for code references