fix most typos, add crate-ci/typos to CI (#2653)

* fix most typos, add crate-ci/typos to CI

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Co-authored-by: Jonathan Kelley <jkelleyrtp@gmail.com>

examples/form.rs

@@ -37,7 +37,7 @@ fn app() -> Element {
 
                     // On desktop/liveview, the form will not navigate the page - the expectation is that you handle
                     // The form event.
-                    // Howver, if your form doesn't have a submit handler, it might navigate the page depending on the webview.
+                    // However, if your form doesn't have a submit handler, it might navigate the page depending on the webview.
                     // We suggest always attaching a submit handler to the form.
                     onsubmit: move |ev| {
                         println!("Submit event: {:#?}", ev);