step 3: add widget shell and renderer foundation

examples/sizing.py

@@ -0,0 +1,25 @@
+# pyright: reportGeneralTypeIssues=false
+
+import dearpygui.dearpygui as dpg
+
+import dpg_gauges as dpgg
+
+
+def main() -> None:
+    dpg.create_context()
+    try:
+        with dpg.window(label="Sizing", width=520, height=300):
+            dpgg.digital_gauge(tag="fixed", label="Fixed", value=12.3, width=180, height=80)
+            dpgg.digital_gauge(tag="wide", label="Fill width", value=45.6, width=-1, height=80)
+            dpgg.analog_gauge(tag="square", label="Square", value=60, width=180, height=180)
+
+        dpg.create_viewport(title="dpg-gauges sizing", width=560, height=340)
+        dpg.setup_dearpygui()
+        dpg.show_viewport()
+        dpg.start_dearpygui()
+    finally:
+        dpg.destroy_context()
+
+
+if __name__ == "__main__":
+    main()