✨ feat(gmail): add gmail client

- implement client for gmail api
- implement auth for gmail api

src/client.rs

@@ -0,0 +1,29 @@
+use google_gmail1::{
+    common::Client,
+    hyper_rustls::{self, HttpsConnector},
+    hyper_util::{self, client::legacy::connect::HttpConnector},
+    yup_oauth2::{self, ApplicationSecret, authenticator::Authenticator},
+};
+
+/// Get auth for gmail
+pub async fn get_auth(secret: ApplicationSecret) -> Authenticator<HttpsConnector<HttpConnector>> {
+    yup_oauth2::InstalledFlowAuthenticator::builder(
+        secret,
+        yup_oauth2::InstalledFlowReturnMethod::HTTPRedirect,
+    )
+    .build()
+    .await
+    .unwrap()
+}
+
+/// Get client for gmail
+pub fn get_client() -> Client<HttpsConnector<HttpConnector>> {
+    hyper_util::client::legacy::Client::builder(hyper_util::rt::TokioExecutor::new()).build(
+        hyper_rustls::HttpsConnectorBuilder::new()
+            .with_native_roots()
+            .unwrap()
+            .https_or_http()
+            .enable_http1()
+            .build(),
+    )
+}