standardizeDocumentPath: also do normal standardizePath to resolve ~/etc
Instr api: add more info about specs
feat(DocumentFile): a replacement for the badly damaged common Document class

this just does the essentials for working with a document from disk.
it is not an editor, a wiki, or an asset attached to the SC IDE.
fix(DocumentFile): standardize dir when setting it
fixes for the broken extensions in in Common/Gui/Base/viewExtensionsQt.sc