Add example.py to demonstrate MicromailClient usage with NTP synchronization

examples/example.py

@@ -0,0 +1,35 @@
+import ntptime
+from machine import RTC
+
+from micromail import MicromailClient
+
+# Use NTP to synchronize time
+rtc = RTC()
+ntptime.settime()
+
+# Create an SMTP client
+client = MicromailClient(
+    host="mail.example.com",
+    port=465,
+    ssl=True,
+)
+
+# Connect to the server
+client.connect()
+# Login to the server
+client.login("example@example.com", "password")
+# Initialize a new message
+client.new_message("example@example.org")
+# Set message headers
+client.headers(
+    {
+        "subject": "Test",
+    }
+)
+# Write message content
+client.write_message("Hello world!")
+client.write_message("Ceci est un message très intéressant.")
+# Send message
+client.send()
+
+client.quit()