- Added frigga's **webserver** - both WebSockets and HTTP, the default is WebSockets
- Added frigga's **client** - both WebSockets and HTTP, the default is WebSockets
- Added webserver to docker-compose/docker-compose.yml - both WebSockets (port=8084) and HTTP (port=8083)
- Added `frigga version` to print the installed version
- [WIP] Added src/frigga/templates/index.html - Supports invoking functions with GUI (browser). Currently supports only `prometheus-get`. Will create another branch to continue this work