move nostr-sdk repository into here because why not?

sdk/search.go

@@ -0,0 +1,24 @@
+package sdk
+
+import (
+	"context"
+
+	"github.com/nbd-wtf/go-nostr"
+)
+
+func (sys *System) SearchUsers(ctx context.Context, query string) []ProfileMetadata {
+	limit := 10
+	profiles := make([]ProfileMetadata, 0, limit*len(sys.UserSearchRelays))
+
+	for ie := range sys.Pool.SubManyEose(ctx, sys.UserSearchRelays, nostr.Filters{
+		{
+			Search: query,
+			Limit:  limit,
+		},
+	}) {
+		m, _ := ParseMetadata(ie.Event)
+		profiles = append(profiles, m)
+	}
+
+	return profiles
+}