feat: Add template display name (backend) (#4966)

* Rename to nameValidator

* Refactor: NameValid

* Fix: comment

* Define new migration

* Include display_name

* Update typesGenerated.ts

* Update meta

* Adjust tests

* CLI tests

* Fix: audit

* Fix: omitempty

* site: display_name is optional

* unit: TestUsernameValid

* entities.ts: add display_name

* site: TemplateSettingsPage.test.tsx

* Fix: TemplateSettingsForm.tsx

* Adjust tests

* Add comment to display_name column

* Fix: rename

* Fix: make

* Loosen regexp

* Fix: err check

* Fix: template name length

* Allow for whitespaces

* Update migration number

coderd/database/queries/templates.sql

@@ -69,10 +69,11 @@ INSERT INTO
 		created_by,
 		icon,
 		user_acl,
-		group_acl
+		group_acl,
+		display_name
 	)
 VALUES
-	($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13) RETURNING *;
+	($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14) RETURNING *;
 
 -- name: UpdateTemplateActiveVersionByID :exec
 UPDATE
@@ -100,7 +101,8 @@ SET
 	description = $3,
 	default_ttl = $4,
 	name = $5,
-	icon = $6
+	icon = $6,
+	display_name = $7
 WHERE
 	id = $1
 RETURNING