The result pane starts from the base and every change, conflicting or not, gets Accept / Ignore next to its side; accepting one side of a conflict still lets the other side be appended, and the modifier key resolves using that side directly. Adds Resolve Simple Conflicts (word-level), Apply Non-Conflicting Changes from the left, right or both (optionally on opening), Revert Conflict Resolution, Accept Yours / Accept Theirs / Cancel / Apply, Compare Contents between any two versions, and undo back to the conflicted state. CRLF and UTF-16 files are written back exactly, deleted sides and binary files are handled, and the commands are registered as merge.* actions.
Refs #826
Co-authored-by: ntbang0901 <121003585+ntbang0901@users.noreply.github.com>
