Implement multi-input OFX clip wiring and texture handling

Store PluginJob input values for lookup
Add per-clip texture inputs on plugin nodes
Map input clips to textures during render (with Source fallback)

README.md

@@ -13,4 +13,15 @@ Now, we are maintaining a community edition for this project.
 ## Binaries
 The original author compiled following binaries:
 - [0.1.0 alpha](https://github.com/olive-editor/olive/releases/tag/0.1.0)
-- [0.2.0 unstable development build](https://github.com/olive-editor/olive/releases/tag/0.2.0-nightly)
+- [0.2.0 unstable development build](https://github.com/olive-editor/olive/releases/tag/0.2.0-nightly)
+
+## OpenFX Support TODO
+- Implement plugin discovery/loading from a given path and populate the cache (currently creates host/cache only). `app/pluginSupport/OliveHost.cpp`
+- Wire output clip image storage: allocate a backing buffer, set `kOfxImagePropData`, and update bounds/rowBytes before render. `app/pluginSupport/OliveClip.cpp`
+- Provide real input clip image fetches (currently returns an empty `Image` for inputs). `app/pluginSupport/OliveClip.cpp`
+- Ensure render path sets per-frame output data and handles ROD/bounds correctly. `app/render/plugin/pluginrenderer.cpp`
+- Add missing param instance types (String, Double3D/Integer3D, Group/Page, Custom/Bytes) and mapping to node inputs. `app/pluginSupport/OlivePluginInstance.cpp`, `app/node/plugins/Plugin.cpp`
+- Implement `editBegin`/`editEnd`, progress, and timeline hooks instead of stubs. `app/pluginSupport/OlivePluginInstance.cpp`, `app/pluginSupport/OlivePluginInstance.h`
+- Integrate persistent message handling with the app UI (currently TODO placeholders). `app/pluginSupport/OlivePluginInstance.cpp`
+- Decide and enforce project extent/fielding behavior instead of the current placeholder comment. `app/pluginSupport/OlivePluginInstance.cpp`
+- Add OpenGL texture render suite support or explicitly disable it (currently `loadTexture` returns null). `app/pluginSupport/OliveClip.h`