Add service execution time example

examples/service_execution_times.py

@@ -0,0 +1,19 @@
+# -*- coding: utf-8 -*-
+#
+#    BitcoinLib - Python Cryptocurrency Library
+#
+#    EXAMPLES - Service - Measure execution time per service provider for simple blockcount query
+#
+#    © 2021 - 2024 December - 1200 Web Development <http://1200wd.com/>
+#
+
+from bitcoinlib.services.services import Service
+
+
+for provider in Service().providers:
+    try:
+        srv = Service(provider_name=provider, cache_uri='')
+    except:
+        pass
+    else:
+        print(provider, srv.blockcount(), srv.execution_time)