feat(windows): add fabric support (#2321)

# Summary
This PR adds Fabric support and a FabricExample app for Windows.

Windows support for Fabric is experimental and as such APIs are subject
to change/break.

## Test Plan


https://github.com/software-mansion/react-native-svg/assets/1422161/2a7db119-44a8-4ee1-a837-41ca8320d8fa

## Compatibility

| OS      | Implemented |
| ------- | :---------: |
| iOS     |    ❌     |
| Android |    ❌     |
| Windows |    ✅     |

## Checklist
- [x] I have tested this on a device and a simulator
- [ ] I added documentation in `README.md`
- [ ] I updated the typed files (typescript)
- [ ] I added a test for the API in the `__tests__` folder

windows/RNSVG/DefsView.h

@@ -1,11 +1,38 @@
 #pragma once
+
+#ifdef USE_FABRIC
+#include "DefsProps.g.h"
+#endif
+
 #include "DefsView.g.h"
 #include "GroupView.h"
 
 namespace winrt::RNSVG::implementation {
+
+#ifdef USE_FABRIC
+REACT_STRUCT(DefsProps)
+struct DefsProps : DefsPropsT<DefsProps, SvgGroupCommonProps> {
+  DefsProps(const winrt::Microsoft::ReactNative::ViewProps &props);
+
+  void SetProp(uint32_t hash, winrt::hstring propName, winrt::Microsoft::ReactNative::IJSValueReader value) noexcept
+      override;
+
+  REACT_SVG_NODE_COMMON_PROPS;
+  REACT_SVG_RENDERABLE_COMMON_PROPS;
+};
+#endif
+
 struct DefsView : DefsViewT<DefsView, RNSVG::implementation::GroupView> {
+ public:
   DefsView() = default;
 
+#ifdef USE_FABRIC
+  DefsView(const winrt::Microsoft::ReactNative::CreateComponentViewArgs &args);
+
+  static void RegisterComponent(const winrt::Microsoft::ReactNative::IReactPackageBuilderFabric &builder) noexcept;
+#endif
+
+  // IRenderable
   void Draw(RNSVG::D2DDeviceContext const &deviceContext, Windows::Foundation::Size const &size);
 };
 } // namespace winrt::RNSVG::implementation