NAS-130867 / 25.04 / Simplify {TCPIP/UnixSock}Origin to ConnectionOrigin

[yocalebo]

I broke app.query recently because we're passing @pass_app objects around. After investigating this for 2 days, I realized we can simplify all of this and get rid of public methods like websocket_local_ip and websocket_interface and get the same information directly from the app.origin object.

This removes all the Origin classes (and subclass) and creates a singular ConnectionOrigin object. I moved over the logic from the other classes to this one but added a few convenient properties (is_ha_connection) so it's easier to use. This removes the necessity for importing these origin classes everywhere and doing isinstance calls. I also get rid of the read_proc_net and get_remote_addr functions. The former is actually deprecated and the latter is unnecessarily expensive.

CI runs for both HA and Single node passed with no obvious regressions: (here and here)

[bugclerk]

Jira URL: https://ixsystems.atlassian.net/browse/NAS-130867

[themylogin]

Thank you!

[bugclerk]

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