Added fetch script for UK Gov FindATender service which is based on OCDS (with issues...)

internal/findATender/ocds/generate.go

@@ -0,0 +1,5 @@
+// Package full contains OCDS 1.1 types with the full extension set applied:
+// the EU profile, UK extension, and the other extensions in extensions.json.
+package ocds
+
+//go:generate go run git.avsdev.uk/Go/go-ocds/cmd/ocdsgen generate -c extensions.json -o ocds_gen.go -p ocds