feat: add oauth2 code verifier

* fix: ensure oauth state param matches before finishing oauth flow

Signed-off-by: Tin Pecirep <tin.pecirep@gmail.com>

* chore: upgrade openid-client to v6

Signed-off-by: Tin Pecirep <tin.pecirep@gmail.com>

* feat: use PKCE for oauth2 on supported clients

Signed-off-by: Tin Pecirep <tin.pecirep@gmail.com>

* feat: use state and PKCE in mobile app

Signed-off-by: Tin Pecirep <tin.pecirep@gmail.com>

* fix: remove obsolete oauth repository init

Signed-off-by: Tin Pecirep <tin.pecirep@gmail.com>

* fix: rewrite callback url if mobile redirect url is enabled

Signed-off-by: Tin Pecirep <tin.pecirep@gmail.com>

* fix: propagate oidc client error cause when oauth callback fails

Signed-off-by: Tin Pecirep <tin.pecirep@gmail.com>

* fix: adapt auth service tests to required state and PKCE params

Signed-off-by: Tin Pecirep <tin.pecirep@gmail.com>

* fix: update sdk types

Signed-off-by: Tin Pecirep <tin.pecirep@gmail.com>

* fix: adapt oauth e2e test to work with PKCE

Signed-off-by: Tin Pecirep <tin.pecirep@gmail.com>

* fix: allow insecure (http) oauth clients

Signed-off-by: Tin Pecirep <tin.pecirep@gmail.com>

---------

Signed-off-by: Tin Pecirep <tin.pecirep@gmail.com>
Co-authored-by: Jason Rasmussen <jason@rasm.me>

mobile/pubspec.lock

@@ -303,7 +303,7 @@ packages:
     source: hosted
     version: "0.3.4+2"
   crypto:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: crypto
       sha256: "1e445881f28f22d6140f181e07737b22f1e099a5e1ff94b0af2f9e4a463f4855"