Commit PR logs and add a script to help draft the next release notes

[archmoj]

Each PR that adds/changes/fixes something notable in terms of CHANGELOG, should provide a Markdown file named using PR number (or the issue number) and the category of change in a folder.
For example a file could be created unders draftlogs/5678_fix.md for a bug fix or draftlogs/5678_add.md for a new feature, etc.
Having these files on master at any time one could simply npm run script to draft the next release notes.
Also we could use this script to quickly draft, then finalize the changelog.
This folder could automatically be emptied during the release process to help collect the changes for the next release.