Migrate co-op pages from old site

I ran `ruby migrate_coop_pages.rb` in `scripts`. There will need to be
some manual tidying up of the generated `.md` files under `_coops` but
I think this is a good start. As a one-off it doesn't warrant the time
it would take to improve the migration script.

_coops/graphics-coop.md

@@ -0,0 +1,44 @@
+---
+title: graphics.coop
+name: graphics.coop
+website: https://graphics.coop/
+email: info@graphics.coop
+twitter: graphicscoop
+github: 
+telephone: 01315249779
+address: 32 Annandale Street Lane,Edinburgh,Scotland,EH7 4LS
+latitude: 55.9607296
+longitude: -3.182652400000052
+clients:
+- cairn-housing-association
+- cds-co-operatives
+- children-s-health-scotland
+- hanover-scotland-housing-association
+- intandem
+- myparkscotland
+- voluntary-health-scotland
+- women-s-fund-for-scotland
+services:
+- artwork
+- branding-and-identity
+- consultancy
+- domain-names
+- exhibition-and-display
+- graphic-design
+- hosting
+- logo-design
+- seo-optimisation
+- web-design
+technologies:
+- gitlab
+- google-maps
+- htmlcss
+- javascript
+- matomo
+- mysql
+- php
+- wordpress
+---
+
+We specialise in design, print and digital services for the third sector.
+We’ve been working with charities, housing associations, social enterprises, campaigners and communities since 1989, so we know the things that matter to third sector clients. Our values as a worker co-operative mean we’re committed to empowering and inspiring these organisations to communicate their message with confidence and helping them make the world a better place.