feat: Add icon to templates (#3561)

coderd/database/queries/templates.sql

@@ -67,10 +67,11 @@ INSERT INTO
 		description,
 		max_ttl,
 		min_autostart_interval,
-		created_by
+		created_by,
+		icon
 	)
 VALUES
-	($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11) RETURNING *;
+	($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12) RETURNING *;
 
 -- name: UpdateTemplateActiveVersionByID :exec
 UPDATE
@@ -98,7 +99,8 @@ SET
 	description = $3,
 	max_ttl = $4,
 	min_autostart_interval = $5,
-	name = $6
+	name = $6,
+	icon = $7
 WHERE
 	id = $1
 RETURNING