Add a wasm module for the segment anything example. (#797)

candle-wasm-examples/segment-anything/src/lib.rs

@@ -0,0 +1,19 @@
+use candle_transformers::models::segment_anything::sam;
+use wasm_bindgen::prelude::*;
+
+pub use sam::{Sam, IMAGE_SIZE};
+
+#[wasm_bindgen]
+extern "C" {
+    // Use `js_namespace` here to bind `console.log(..)` instead of just
+    // `log(..)`
+    #[wasm_bindgen(js_namespace = console)]
+    pub fn log(s: &str);
+}
+
+#[macro_export]
+macro_rules! console_log {
+    // Note that this is using the `log` function imported above during
+    // `bare_bones`
+    ($($t:tt)*) => ($crate::log(&format_args!($($t)*).to_string()))
+}