US or EU Data Region Selection (#3752)

* add selection of data region for push

* fix cargo check + rewrite config + add check url

* fix clippy error

* add comment in .env.template, adapt config.rs

* Update .env.template

Co-authored-by: William Desportes <williamdes@wdes.fr>

* Update .env.template

Co-authored-by: William Desportes <williamdes@wdes.fr>

* Revert "Update .env.template"

This reverts commit 5bed974ba7b9f481792d2228834585f053d47dc3.

* Revert "Update .env.template"

This reverts commit 0760eff95dfaf2a9cf97bb25f6cf7660bdf55173.

* fix /connect/token to push identity

* fix /connect/token to push identity

* Fixed formatting when solving merge conflicts

---------

Co-authored-by: William Desportes <williamdes@wdes.fr>
Co-authored-by: Daniel García <dani-garcia@users.noreply.github.com>

src/api/push.rs

@@ -50,7 +50,11 @@ async fn get_auth_push_token() -> ApiResult<String> {
         ("client_secret", &client_secret),
     ];
 
-    let res = match get_reqwest_client().post("https://identity.bitwarden.com/connect/token").form(&params).send().await
+    let res = match get_reqwest_client()
+        .post(&format!("{}/connect/token", CONFIG.push_identity_uri()))
+        .form(&params)
+        .send()
+        .await
     {
         Ok(r) => r,
         Err(e) => err!(format!("Error getting push token from bitwarden server: {e}")),