Add initial defination of the hello package

hello/Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+name = "hello"
+version = "0.1.0"
+edition = "2021"
+authors = ["Daohan Chong <wildcat.name@gmail.com>"]
+
+[lib]
+crate-type = ["cdylib"]
+name = "hello"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+uniffi = "0.16.0"
+
+[build-dependencies]
+uniffi_build = "0.16.0"

hello/build.rs

@@ -0,0 +1,3 @@
+fn main() {
+  uniffi_build::generate_scaffolding("./src/hello.udl").unwrap();
+}

hello/src/hello.udl

@@ -0,0 +1,3 @@
+namespace Hello {
+    void say_hello(string name);
+};

hello/src/lib.rs

@@ -0,0 +1,4 @@
+
+pub fn say_hello(name: &str) {
+    println!("Hello, {}!", name);
+}

todo_list_shared/Cargo.toml

@@ -1,9 +0,0 @@
-[package]
-name = "todo_list_shared"
-version = "0.1.0"
-edition = "2021"
-author = "Daohan Chong <wildcat.name@gmail.com>"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]

todo_list_shared/src/lib.rs

@@ -1,8 +0,0 @@
-#[cfg(test)]
-mod tests {
-    #[test]
-    fn it_works() {
-        let result = 2 + 2;
-        assert_eq!(result, 4);
-    }
-}