Add openidconnect authentication demo (#1500)

* Add openidconnect authentication demo

* use_atom_ref usage to have a read/write handle on the atom

* Use default

* Code rewrite to better reflect the authentication flow

* Use the env macro instead of the build.rs to load env variables

* Add env variables

* Remove unnecessary dependency

* Add env variables to the root workspace

* Update readme

* Bump openidconnect version

* Use props to pass the client to the child components

* Code clean up

---------

Co-authored-by: Truong Tan Dat <truongt@igbmc.fr>

examples/openid_connect_demo/src/storage.rs

@@ -0,0 +1,38 @@
+use fermi::UseAtomRef;
+use gloo_storage::{LocalStorage, Storage};
+use serde::{Deserialize, Serialize};
+
+use crate::{
+    constants::{DIOXUS_FRONT_AUTH_REQUEST, DIOXUS_FRONT_AUTH_TOKEN},
+    oidc::{AuthRequestState, AuthTokenState},
+};
+
+#[derive(Serialize, Deserialize, Clone)]
+pub struct StorageEntry<T> {
+    pub key: String,
+    pub value: T,
+}
+
+pub trait PersistentWrite<T: Serialize + Clone> {
+    fn persistent_set(atom_ref: &UseAtomRef<Option<T>>, entry: Option<T>);
+}
+
+impl PersistentWrite<AuthTokenState> for AuthTokenState {
+    fn persistent_set(
+        atom_ref: &UseAtomRef<Option<AuthTokenState>>,
+        entry: Option<AuthTokenState>,
+    ) {
+        *atom_ref.write() = entry.clone();
+        LocalStorage::set(DIOXUS_FRONT_AUTH_TOKEN, entry).unwrap();
+    }
+}
+
+impl PersistentWrite<AuthRequestState> for AuthRequestState {
+    fn persistent_set(
+        atom_ref: &UseAtomRef<Option<AuthRequestState>>,
+        entry: Option<AuthRequestState>,
+    ) {
+        *atom_ref.write() = entry.clone();
+        LocalStorage::set(DIOXUS_FRONT_AUTH_REQUEST, entry).unwrap();
+    }
+}