feat(sso): enhance SSO provider management and trusted origins handling

- Added logic to retrieve and delete SSO providers, ensuring proper permission checks and error handling.
- Updated user trusted origins when adding or removing SSO providers, maintaining accurate origin lists.
- Refactored trusted origins retrieval to improve clarity and efficiency in the authentication process.
- Introduced utility functions for normalizing trusted origins and converting request headers.

packages/server/src/services/proprietary/sso.ts

@@ -13,3 +13,23 @@ export const getSSOProviders = async () => {
 	});
 	return providers;
 };
+
+export const requestToHeaders = (req: {
+	headers?: Record<string, string | string[] | undefined>;
+}): Headers => {
+	const headers = new Headers();
+	if (req?.headers) {
+		for (const [key, value] of Object.entries(req.headers)) {
+			if (value !== undefined && key.toLowerCase() !== "host") {
+				headers.set(key, Array.isArray(value) ? value.join(", ") : value);
+			}
+		}
+	}
+	return headers;
+};
+
+export const normalizeTrustedOrigin = (value: string): string => {
+	// Keep it simple: trim and remove trailing slashes.
+	// e.g. "https://example.com/" -> "https://example.com"
+	return value.trim().replace(/\/+$/, "");
+};