Refactoring of frontend and OIDC

I want to make some code reusable for other projects

crates/frontend/src/config.rs

@@ -1,35 +1,10 @@
-use openidconnect::{ClientId, ClientSecret, IssuerUrl, Scope};
+pub use crate::oidc::OidcConfig;
 use serde::{Deserialize, Serialize};
 
 fn default_true() -> bool {
     true
 }
 
-#[derive(Deserialize, Serialize, Clone, Default)]
-#[serde(rename_all = "snake_case")]
-pub enum UserIdClaim {
-    // The correct option
-    Sub,
-    // The more ergonomic option if you know what you're doing
-    #[default]
-    PreferredUsername,
-}
-
-#[derive(Deserialize, Serialize, Clone)]
-#[serde(deny_unknown_fields)]
-pub struct OidcConfig {
-    pub name: String,
-    pub issuer: IssuerUrl,
-    pub client_id: ClientId,
-    pub client_secret: Option<ClientSecret>,
-    pub scopes: Vec<Scope>,
-    #[serde(default)]
-    pub allow_sign_up: bool,
-    pub require_group: Option<String>,
-    #[serde(default)]
-    pub claim_userid: UserIdClaim,
-}
-
 #[derive(Deserialize, Serialize, Clone)]
 #[serde(deny_unknown_fields)]
 pub struct FrontendConfig {