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>

Cargo.toml

@@ -41,6 +41,7 @@ members = [
     "examples/tailwind",
     "examples/PWA-example",
     "examples/query_segments_demo",
+    "examples/openid_connect_demo",
     # Playwright tests
     "playwright-tests/liveview",
     "playwright-tests/web",