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/templates.go

@@ -472,6 +472,7 @@ func (api *API) patchTemplateMeta(rw http.ResponseWriter, r *http.Request) {
 
 		if req.Name == template.Name &&
 			req.Description == template.Description &&
+			req.DisplayName == template.DisplayName &&
 			req.Icon == template.Icon &&
 			req.DefaultTTLMillis == time.Duration(template.DefaultTtl).Milliseconds() {
 			return nil
@@ -479,6 +480,7 @@ func (api *API) patchTemplateMeta(rw http.ResponseWriter, r *http.Request) {
 
 		// Update template metadata -- empty fields are not overwritten.
 		name := req.Name
+		displayName := req.DisplayName
 		desc := req.Description
 		icon := req.Icon
 		maxTTL := time.Duration(req.DefaultTTLMillis) * time.Millisecond
@@ -486,6 +488,9 @@ func (api *API) patchTemplateMeta(rw http.ResponseWriter, r *http.Request) {
 		if name == "" {
 			name = template.Name
 		}
+		if displayName == "" {
+			displayName = template.DisplayName
+		}
 		if desc == "" {
 			desc = template.Description
 		}
@@ -494,6 +499,7 @@ func (api *API) patchTemplateMeta(rw http.ResponseWriter, r *http.Request) {
 			ID:          template.ID,
 			UpdatedAt:   database.Now(),
 			Name:        name,
+			DisplayName: displayName,
 			Description: desc,
 			Icon:        icon,
 			DefaultTtl:  int64(maxTTL),
@@ -738,6 +744,7 @@ func (api *API) convertTemplate(
 		UpdatedAt:           template.UpdatedAt,
 		OrganizationID:      template.OrganizationID,
 		Name:                template.Name,
+		DisplayName:         template.DisplayName,
 		Provisioner:         codersdk.ProvisionerType(template.Provisioner),
 		ActiveVersionID:     template.ActiveVersionID,
 		WorkspaceOwnerCount: workspaceOwnerCount,