chore: Enable DCM rule double-literal-format (#3248)

Enable DCM rule double-literal-format.

More details
[here](https://dcm.dev/docs/rules/common/double-literal-format/). This
both forbids trailing zeroes and mandates leading zeroes.

If we would prefer a different style (e.g. prefer no leading zero
instead), just lmk :)

examples/lib/stories/components/clip_component_example.dart

@@ -22,7 +22,7 @@ class _Rectangle extends RectangleComponent {
           children: [
             RotateEffect.by(
               pi * 2,
-              EffectController(duration: .4, infinite: true),
+              EffectController(duration: 0.4, infinite: true),
             ),
           ],
         );