Tests: add world load benchmark (#2768)

test/benchmark/time_it.py

@@ -0,0 +1,23 @@
+import time
+
+
+class TimeIt:
+    def __init__(self, name: str, time_logger=None):
+        self.name = name
+        self.logger = time_logger
+        self.timer = None
+        self.end_timer = None
+
+    def __enter__(self):
+        self.timer = time.perf_counter()
+        return self
+
+    @property
+    def dif(self):
+        return self.end_timer - self.timer
+
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        if not self.end_timer:
+            self.end_timer = time.perf_counter()
+        if self.logger:
+            self.logger.info(f"{self.dif:.4f} seconds in {self.name}.")