feat: wire 15 service subcommands into CLI, remove old user command

Adds Verb variants: auth, vcs, chat, search, storage, media, mon,
vault, people, docs, meet, drive, mail, cal, find. Each delegates
to the corresponding SDK cli.rs dispatch function.

Removes the legacy `user` command (replaced by `auth identity`).
Renames Get's -o to --kubectl-output to avoid conflict with the
new global -o/--output flag. Enables all SDK features in binary.

sunbeam/Cargo.toml

@@ -9,7 +9,7 @@ name = "sunbeam"
 path = "src/main.rs"
 
 [dependencies]
-sunbeam-sdk = { path = "../sunbeam-sdk", features = ["cli"] }
+sunbeam-sdk = { path = "../sunbeam-sdk", features = ["all", "cli"] }
 tokio = { version = "1", features = ["full"] }
 clap = { version = "4", features = ["derive"] }
 chrono = "0.4"