Standardize unimplemented API failures

crates/libremetaverse-imaging/Cargo.toml

@@ -7,5 +7,8 @@ license.workspace = true
 repository.workspace = true
 description = "Texture codec abstractions for the MetaCrate LibreMetaverse rewrite"
 
+[dependencies]
+libremetaverse-types = { path = "../libremetaverse-types" }
+
 [lints]
 workspace = true

crates/libremetaverse-imaging/src/generated.rs

@@ -8,7 +8,7 @@ pub trait ITextureCodec {
 }
 
 /// `enum` shim for C# `LibreMetaverse.Imaging.ImageChannels`; members remain intentionally unimplemented.
-#[derive(Debug, Clone, Copy, Default, PartialEq, Eq, Hash)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 pub struct ImageChannels;
 impl ImageChannels {
     pub const CSHARP_NAME: &'static str = "LibreMetaverse.Imaging.ImageChannels";
@@ -16,7 +16,7 @@ impl ImageChannels {
 }
 
 /// `class` shim for C# `LibreMetaverse.Imaging.ManagedImage`; members remain intentionally unimplemented.
-#[derive(Debug, Clone, Copy, Default, PartialEq, Eq, Hash)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 pub struct ManagedImage;
 impl ManagedImage {
     pub const CSHARP_NAME: &'static str = "LibreMetaverse.Imaging.ManagedImage";

crates/libremetaverse-imaging/src/lib.rs

@@ -3,3 +3,4 @@
 mod generated;
 
 pub use generated::*;
+pub use libremetaverse_types::NotImplemented as Error;