Add renderer blend state contract

src/renderer_api/recording_renderer.h

@@ -10,6 +10,7 @@ namespace pp::renderer {
 enum class RecordedRenderCommandKind : std::uint8_t {
     begin_render_pass,
     set_viewport,
+    set_blend_state,
     bind_shader,
     bind_texture,
     bind_mesh,
@@ -27,6 +28,7 @@ struct RecordedRenderCommand {
     TextureDesc target_desc {};
     ClearColor clear_color {};
     Viewport viewport {};
+    BlendState blend_state {};
     MeshDesc mesh_desc {};
     TextureDesc texture_desc {};
     std::uint32_t texture_slot = 0;
@@ -98,6 +100,7 @@ public:
         IRenderTarget& target,
         ClearColor clear_color) noexcept override;
     [[nodiscard]] pp::foundation::Status set_viewport(Viewport viewport) noexcept override;
+    [[nodiscard]] pp::foundation::Status set_blend_state(BlendState state) noexcept override;
     [[nodiscard]] pp::foundation::Status bind_shader(IShaderProgram& shader) noexcept override;
     [[nodiscard]] pp::foundation::Status bind_texture(
         std::uint32_t slot,