Transition from Dev Containers to Gitpod

All Thea's Pantry projects need to be set up to work with VSCode in Gitpod (rather than VSCode devcontainers).

1. All settings from the .devcontainer/devcontainer.json file should be moved to .vscode/settings.json
2. All extensions from the .devcontainer/devcontainer.json file should be moved to .vscode/extensions.json
3. If there are no settings or extensions, create an issue and tag @kwurst so that he can help determine what should be added.
4. Check the .devcontainer/Dockerfile to see if any dependencies are being installed. If there is anything being installed (other than bash-completion and silversearcher) create an issue and tag @kwurst so that he can make a determination about what to do with it.