Generate code block ID index/manifest

[mongodben]

Ideally works for files and directories of bluehawked files

e.g. bluehawk manifest examples/node/Examples/mongodb.txt

outputs:

plant-document-type
plants-collection-documents
collection-type
plants-collection-handle
insert-a-single-document
insert-a-single-document-result
insert-multiple-documents
insert-multiple-documents-result
find-a-single-document
find-a-single-document-result
...