Create tracing_supported() util function

tracetools_trace/tracetools_trace/tools/__init__.py

@@ -11,3 +11,15 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+
+"""Module for tracing."""
+
+import sys
+
+
+def tracing_supported() -> bool:
+    """
+    Check if tracing is supported on this platform.
+    It does not mean a tracer is installed.
+    """
+    return sys.platform == 'linux'