Update git remote URL from git.threefold.info to git.ourworld.tf

specs/models/library/collection.v

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+module library
+
+import freeflowuniverse.herolib.hero.models.core
+
+// Collection represents a collection of library items
+pub struct Collection {
+	core.Base // Title of the collection
+	title string @[index]
+
+	// Optional description of the collection
+	description ?string
+
+	// List of image item IDs belonging to this collection
+	images []u32
+
+	// List of PDF item IDs belonging to this collection
+	pdfs []u32
+
+	// List of Markdown item IDs belonging to this collection
+	markdowns []u32
+
+	// List of Book item IDs belonging to this collection
+	books []u32
+
+	// List of Slides item IDs belonging to this collection
+	slides []u32
+}