* Add workflow to build and deploy the sample index
* update gh-pages action
* fix yaml
* create web/ directory in build
* grammar
* add ignored directories
* revert pubspec.lock files
* add job to run _tool/verify_samples.dart
* Update filipino_cuisine for Flutter 2
* remove timeflow demo.
The unnamed List constructor is now deprecated, refactoring
this code to use add() requires more knowledge about the code for
this demo.
https://dart.dev/null-safety/understanding-null-safety#no-unnamed-list-constructor
* update slide_puzzle
* ensure stable channel is used to verify
* move verify web demos action into separate yaml file - avoid running
on each flutter version.
* add on: pull_request
* update slide_puzzle
* Update gh-pages.yml
* Add copyright header
Andrew Brogdon
John Ryan