T5 Wasm (#918)

* init t5 wasm model

* split workers for each model

* clean up

* add some ui

* readme

* index

* typo

* remove cache param, clear_kv_cache

* add max_length as param

* add model tasks option to ui

* add method to load quantized gguf from buffer

* Add quantized wasm module

* add quantized models to UI, dynamic import wasms

* link to quantized

* fix copy

* fix ModelEncoder

* fix README.md

candle-wasm-examples/t5/src/lib.rs

@@ -0,0 +1,16 @@
+use wasm_bindgen::prelude::*;
+
+#[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()))
+}