OAuth2 client: support for Device Code Flow

[adutra]

Requires #7894

[adutra]

Example of Spark SQL session:

spark-sql (default)> use nessie;

[nessie-oauth2-client] ======= Nessie authentication required =======
[nessie-oauth2-client] Browse to the following URL:
[nessie-oauth2-client] http://keycloak:8080/realms/master/device
[nessie-oauth2-client] And enter the code:
[nessie-oauth2-client] LZLB-UQKW
[nessie-oauth2-client] The code will expire at 2023-12-28T21:52:53.682771Z

Time taken: 1.926 seconds
spark-sql ()> create namespace testing;
Time taken: 1.758 seconds
spark-sql ()>