feat: add user secrets SDK types and db2sdk converters (#24102)

Adds the SDK types and database-to-SDK conversion helpers for the user secrets feature.

site/src/api/typesGenerated.ts

@@ -2811,6 +2811,20 @@ export interface CreateUserRequestWithOrgs {
 	readonly service_account?: boolean;
 }
 
+// From codersdk/usersecrets.go
+/**
+ * CreateUserSecretRequest is the payload for creating a new user
+ * secret. Name and Value are required. All other fields are optional
+ * and default to empty string.
+ */
+export interface CreateUserSecretRequest {
+	readonly name: string;
+	readonly value: string;
+	readonly description?: string;
+	readonly env_name?: string;
+	readonly file_path?: string;
+}
+
 // From codersdk/workspaces.go
 export type CreateWorkspaceBuildReason =
 	| "cli"
@@ -7686,6 +7700,20 @@ export interface UpdateUserQuietHoursScheduleRequest {
 	readonly schedule: string;
 }
 
+// From codersdk/usersecrets.go
+/**
+ * UpdateUserSecretRequest is the payload for partially updating a
+ * user secret. At least one field must be non-nil. Pointer fields
+ * distinguish "not sent" (nil) from "set to empty string" (pointer
+ * to empty string).
+ */
+export interface UpdateUserSecretRequest {
+	readonly value?: string;
+	readonly description?: string;
+	readonly env_name?: string;
+	readonly file_path?: string;
+}
+
 // From codersdk/workspaces.go
 export interface UpdateWorkspaceACL {
 	/**
@@ -8038,6 +8066,21 @@ export interface UserRoles {
 	readonly organization_roles: Record<string, string[]>;
 }
 
+// From codersdk/usersecrets.go
+/**
+ * UserSecret represents a user secret's metadata. The secret value
+ * is never included in API responses.
+ */
+export interface UserSecret {
+	readonly id: string;
+	readonly name: string;
+	readonly description: string;
+	readonly env_name: string;
+	readonly file_path: string;
+	readonly created_at: string;
+	readonly updated_at: string;
+}
+
 // From codersdk/users.go
 export type UserStatus = "active" | "dormant" | "suspended";