Merge bitcoin#17574: doc: Add historical release notes for 0.19.0.1

14feda0 doc: Add historical release notes for 0.19.0.1 (Wladimir J. van der Laan)

Pull request description:

  Add historical release notes for 0.19.0.1. And replace 0.19.0's release notes with a short explanation.

Top commit has no ACKs.

Tree-SHA512: 3551250c8b0643a96b645af9088ef07a079452bad3abf2b5653563f5ecbc07fc1e1c6adcd56eb9fa6e3e7637719b3b99253b95bce409a9267a428323b559bfa3

Author: laanwj