added examples

src/examples/bot.rs

@@ -0,0 +1,29 @@
+/// Create a new bot using the Telegram bot token and chat ID from the environment variables.
+///
+/// # Example
+///
+/// ```
+/// use rustygram::bot::Bot;
+///
+/// # fn main() -> Result<(), Box<dyn std::error::Error>> {
+/// // Assuming the environment variables are set
+/// let bot = create_bot()?;
+/// // Use the bot...
+/// # Ok(())
+/// # }
+/// ```
+fn create_bot() -> Bot {
+    dotenv().ok();
+    let token = env::var("TELEGRAM_BOT_TOKEN").expect("TELEGRAM_BOT_TOKEN not set");
+    let chat_id = env::var("TELEGRAM_CHAT_ID").expect("TELEGRAM_CHAT_ID not set");
+    Bot::new(token, chat_id)
+}
+
+#[tokio::main]
+/// Send a message to the chat associated with the bot.
+fn send_message() -> Result<(), ErrorResult> {
+    let bot = create_bot();
+    let msg = "Hello, world!";
+    let options = None;
+    bot.send_message(msg, options)
+}