use switch forwarding to simplify github.nu (#110)

related to
- nushell/nushell#11057

## description
this PR simplifies the switch forwarding in `gm gh query-user` and `gm
gh query-releases` to `gm gh query-api` with the following syntax from
nushell/nushell#11057
```nushell
foo --bar=$bar
```

src/nu-git-manager-sugar/github.nu

@@ -182,11 +182,7 @@ export def "gm gh query-releases" [
     --page-size: int = 100 # the size of each page
     --no-gh # force to use `http get` instead of `gh`
 ]: nothing -> table<url: string, assets_url: string, upload_url: string, html_url: string, id: int, author: record<login: string, id: int, node_id: string, avatar_url: string, gravatar_id: string, url: string, html_url: string, followers_url: string, following_url: string, gists_url: string, starred_url: string, subscriptions_url: string, organizations_url: string, repos_url: string, events_url: string, received_events_url: string, type: string, site_admin: bool>, node_id: string, tag_name: string, target_commitish: string, name: string, draft: bool, prerelease: bool, created_at: string, published_at: string, assets: list<any>, tarball_url: string, zipball_url: string, body: string, reactions: record<url: string, total_count: int, +1: int, -1: int, laugh: int, hooray: int, confused: int, heart: int, rocket: int, eyes: int>, mentions_count: int> {
-    if $no_gh {
-        gm gh query-api $"/repos/($repo)/releases" --page-size $page_size --no-gh
-    } else {
-        gm gh query-api $"/repos/($repo)/releases" --page-size $page_size
-    }
+    gm gh query-api $"/repos/($repo)/releases" --page-size $page_size --no-gh=$no_gh
 }
 
 # get information about a GitHub user
@@ -198,11 +194,7 @@ export def "gm gh query-user" [
     user: string # the user to query information about
     --no-gh # force to use `http get` instead of `gh`
 ]: nothing -> record<login: string, id: int, node_id: string, avatar_url: string, gravatar_id: string, url: string, html_url: string, followers_url: string, following_url: string, gists_url: string, starred_url: string, subscriptions_url: string, organizations_url: string, repos_url: string, events_url: string, received_events_url: string, type: string, site_admin: bool, name: string, company: string, blog: string, location: string, email: nothing, hireable: nothing, bio: string, twitter_username: nothing, public_repos: int, public_gists: int, followers: int, following: int, created_at: string, updated_at: string> {
-    if $no_gh {
-        gm gh query-api $"/users/($user)" --no-paginate --no-gh
-    } else {
-        gm gh query-api $"/users/($user)" --no-paginate
-    }
+    gm gh query-api $"/users/($user)" --no-paginate --no-gh=$no_gh
 }
 
 # checkout one of the repo's PR interactively