Add perfetto support for counter collection

Fix endtimestamp for counter tracks

Add fix for rocprofv3 counter collection tests

Fix formats and refactors

Added docs and addressed review comments

Address more review comments.

tests/pytest-packages/tests/rocprofv3.py

@@ -35,6 +35,7 @@ def test_perfetto_data(
         "memory_allocation",
         "rocdecode_api",
         "rocjpeg_api",
+        "counter_collection",
     ),
 ):
 
@@ -47,6 +48,7 @@ def test_perfetto_data(
         "memory_allocation": ("memory_allocation", "memory_allocation"),
         "rocdecode_api": ("rocdecode_api", "rocdecode_api"),
         "rocjpeg_api": ("rocjpeg_api", "rocjpeg_api"),
+        "counter_collection": ("counter_collection", "counter_collection"),
     }
 
     # make sure they specified valid categories
@@ -57,7 +59,23 @@ def test_perfetto_data(
         itr for key, itr in mapping.items() if key in categories
     ]:
         _pf_data = pftrace_data.loc[pftrace_data["category"] == pf_category]
-        _js_data = json_data["rocprofiler-sdk-tool"]["buffer_records"][js_category]
+
+        _js_data = []
+        if js_category != "counter_collection":
+            _js_data = json_data["rocprofiler-sdk-tool"]["buffer_records"][js_category]
+        else:
+            unique_counter_ids = set()
+
+            for dispatch_entry in json_data["rocprofiler-sdk-tool"]["callback_records"][
+                js_category
+            ]:
+                counter_records = dispatch_entry["records"]
+
+                for record in counter_records:
+                    counter_id = record["counter_id"]["handle"]
+                    unique_counter_ids.add(counter_id)
+
+            _js_data = [{"counter_id": id} for id in unique_counter_ids]
 
         assert len(_pf_data) == len(
             _js_data