feat: added basic auth (#60)

* some small css fixes and changes

* added basic auth
https://stackoverflow.com/a/9534652/3642588

* most tests are passing

* fixed all the tests

* maybe now CI will pass

* implemented sigoden's suggestions

* test basic auth

* fixed some little things

src/server.rs

@@ -1,4 +1,3 @@
-use crate::auth::generate_www_auth;
 use crate::streamer::Streamer;
 use crate::utils::{decode_uri, encode_uri};
 use crate::{Args, BoxResult};
@@ -96,7 +95,12 @@ impl Server {
         }
 
         let authorization = headers.get(AUTHORIZATION);
-        let guard_type = self.args.auth.guard(req_path, &method, authorization);
+        let guard_type = self.args.auth.guard(
+            req_path,
+            &method,
+            authorization,
+            self.args.auth_method.clone(),
+        );
         if guard_type.is_reject() {
             self.auth_reject(&mut res);
             return Ok(res);
@@ -720,7 +724,7 @@ const DATA =
     }
 
     fn auth_reject(&self, res: &mut Response) {
-        let value = generate_www_auth(false);
+        let value = self.args.auth_method.www_auth(false);
         set_webdav_headers(res);
         res.headers_mut().typed_insert(Connection::close());
         res.headers_mut()