Gitpod Dev Environments - InventorySystem/Documentation

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 .gitpod.yml in the extensions list. See .gitpod.yml vscode extensions documentation.
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.

Look at https://gitlab.com/LibreFoodPantry/client-solutions/theas-pantry/guestinfosystem/guestinfoapi as an example of a project that has already been converted.