docs: use 2.x wording and document mention padding
docs: complete v2 migration guidance
docs: document optional scoped highlighting releases
docs: use the apollohg scoped editor package
docs: replace legacy wiki with current API and migration guides
docs: adopt RichTextEditor and RichTextViewer names
docs: describe the renamed package as published
updated package name
updated wiki
v1 docs
Removed ref to version.
Removed duplicate headings.
Moved docs from main repo.