Add properties to support device grant with Spring Authorization Server

[jgrandja]

• Add property *.endpoint.device-authorization-uri - maps to AuthorizationServerSettings.getDeviceAuthorizationEndpoint()
• Add property *.endpoint.device-verification-uri - maps to AuthorizationServerSettings.getDeviceVerificationEndpoint()
• Add property *.token.device-code-time-to-live - maps to TokenSettings.getDeviceCodeTimeToLive()
• Consider moving OAuth2AuthorizationServerProperties up one level to *.oauth2.server package to align with client and resource server auto-config

Related gh-34003

[snicoll]

@jgrandja would it be possible to rephrase that in a less generic fashion? We prefer an issue to be focused on one thing at a time and a non-generic issue title is one way to enforce that.

[mbhave]

I've update the title based on what I think is being requested. @jgrandja Feel free to update if that was not the intent of the issue.

[mbhave]

Regarding the package for OAuth2AuthorizationServerProperties , we decided to keep things in servlet until we have a reactive package. We can move out common functionality if reactive support is added.

[sjohnr]

@mbhave Can I take this one?

[mbhave]

@sjohnr It's all yours!