feat: add support for request ID tracking across services

- Implemented request ID handling in various services and handlers to improve traceability of requests.
- Added new AuthOptions endpoint to expose WxWork and OIDC configuration options.
- Updated message and event logging to include request ID for better debugging.
- Enhanced login form to dynamically show available authentication options based on server configuration.
- Introduced utility functions for normalizing and ensuring valid request IDs.
- Updated tests to verify request ID functionality in message sending and event logging.

internal/pkg/tracex/request_id_test.go

@@ -0,0 +1,24 @@
+package tracex
+
+import "testing"
+
+func TestNormalizeRequestID(t *testing.T) {
+	if got := NormalizeRequestID("  trace-123  "); got != "trace-123" {
+		t.Fatalf("NormalizeRequestID()=%q want %q", got, "trace-123")
+	}
+	if got := NormalizeRequestID("bad\nid"); got != "" {
+		t.Fatalf("NormalizeRequestID()=%q want empty", got)
+	}
+	if got := NormalizeRequestID(""); got != "" {
+		t.Fatalf("NormalizeRequestID()=%q want empty", got)
+	}
+}
+
+func TestEnsureRequestID(t *testing.T) {
+	if got := EnsureRequestID("trace-123"); got != "trace-123" {
+		t.Fatalf("EnsureRequestID(existing)=%q want %q", got, "trace-123")
+	}
+	if got := EnsureRequestID(""); got == "" {
+		t.Fatalf("EnsureRequestID(empty) should generate a value")
+	}
+}