Add Manoir Pub at Saint-Maurice

[oinska]

This bar seems quiet at the moment, but sometimes there are fabulous concerts!
This is a Google Calendar with plant closures... I don't know if it works.

 fields:
  - name: "type"
    value: "concert"
  - name: "city"
    value: "Saint-Maurice"
  - name: country
    value: Switzerland
  - name: "location"
    value: "Manoir Pub"
  - name: "sourceUrl"
    value: "https://manoirpub.ch/evenements/"

[jakopako]

I have to check if scraping the google calendar is currently possible. I remember vaguely that I had some issues in this regard in the past. Also, currently I don't see any concerts taking place in this venue, except for Jeudredi Raclette (which I guess is not a concert).