[BREAKING] Bump default Electron to 19.0.9 (from 18.3.5), with Chrome 102

As usual, we did our best to adapt to Electron breaking changes, but patches welcome to fix regressions. If unable to submit a patch, feel free to revert to Nativefier 47.2.1, or pass -e 18.3.5 for a temporary downgrade (it will work for a while, but not forever).

Official release notes: https://www.electronjs.org/blog/electron-19-0 Detailed release notes: 19.0.0, .1, .2, .3, .4, .5, .6, .7, .8, .9

Also in this release,

• CATALOG.md: add a recipe to use buttons on Notion (PR #1430)
• GitHub Issues: switch from "Issue templates" to new & better "Issue forms" (fix #1258, PR #1425)
• Maintenance: upgrade dependencies, fix PlayWright tests