add with_about for CLI commands (#2741)

* add with_about for echo, server, and auth

* update for feedback

* finish (most) remaining command documentation

* update comments after additional clarification

* add expanded_api descriptions

* add comments for action_api

* add comments for remaining apis

* add comment for package-rebuild

* fix build errors

* missed one with_about

* add context to git-info subcommands

* remove context from git-info subcommands

* Make git-info from_fns generic over context

* make version::git_info generic over the context

* try removing generics from subcommand and version::git_info

* try adding a closure with context

* Updates for reviewer feedback

core/startos/src/registry/os/mod.rs

@@ -15,8 +15,16 @@ pub fn os_api<C: Context>() -> ParentHandler<C> {
             "index",
             from_fn_async(index::get_os_index)
                 .with_display_serializable()
+                .with_about("List index of OS versions")
                 .with_call_remote::<CliContext>(),
         )
-        .subcommand("asset", asset::asset_api::<C>())
-        .subcommand("version", version::version_api::<C>())
+        .subcommand(
+            "asset",
+            asset::asset_api::<C>().with_about("Commands to add, sign, or get registry assets"),
+        )
+        .subcommand(
+            "version",
+            version::version_api::<C>()
+                .with_about("Commands to add, remove, or list versions or version signers"),
+        )
 }