migrate to fastapi, improve HTML output

.DS_Store

mc_openapi/.DS_Store

mc_openapi/__init__.py

mc_openapi/__main__.py

mc_openapi/assets/metamodels/doml_meta_v1.0.yaml

mc_openapi/assets/metamodels/doml_meta_v2.0.yaml

mc_openapi/assets/metamodels/doml_meta_v2.1.yaml

mc_openapi/assets/metamodels/doml_meta_v2.2.1.yaml

mc_openapi/assets/metamodels/doml_meta_v2.2.yaml

mc_openapi/assets/metamodels/doml_meta_v2.3.yaml

mc_openapi/assets/metamodels/doml_meta_v3.0.yaml

mc_openapi/assets/metamodels/doml_v1.0.ecore

mc_openapi/assets/metamodels/doml_v2.0.ecore

mc_openapi/assets/metamodels/doml_v2.1.ecore

mc_openapi/assets/metamodels/doml_v2.2.1.ecore

mc_openapi/assets/metamodels/doml_v2.2.ecore

mc_openapi/assets/metamodels/doml_v2.3.ecore

mc_openapi/assets/metamodels/doml_v3.0.ecore

mc_openapi/assets/static/bulma.css.map

mc_openapi/assets/static/bulma.min.css