Add sync write example

examples/sync_write.py

@@ -0,0 +1,18 @@
+"""
+A short example showing how to create an embedded replica, make writes and then read them
+
+Set the LIBSQL_URL and LIBSQL_AUTH_TOKEN environment variables to point to a database.
+"""
+import os
+
+import libsql_experimental as libsql
+
+print(F"syncing with {os.getenv('LIBSQL_URL')}")
+conn = libsql.connect("hello.db", sync_url=os.getenv("LIBSQL_URL"),
+                      auth_token=os.getenv("LIBSQL_AUTH_TOKEN"))
+conn.execute("CREATE TABLE IF NOT EXISTS users (id INTEGER);")
+conn.execute("INSERT INTO users(id) VALUES (1);")
+conn.commit()
+conn.sync()
+
+print(conn.execute("select * from users").fetchall())