Add test binaries to .gitignore and remove them from tracking

Co-authored-by: uNetworkingAB <110806833+uNetworkingAB@users.noreply.github.com>
Agent-Logs-Url: https://github.com/uNetworking/uWebSockets/sessions/aa9f6642-4b42-421f-bc6e-a1af47c9fa45

Author: Copilot

.gitignore

@@ -0,0 +1,7 @@
+tests/BloomFilter
+tests/ChunkedEncoding
+tests/ExtensionsNegotiator
+tests/HttpParser
+tests/HttpRouter
+tests/Query
+tests/TopicTree