feat: add organization delete command to cli (#21940)

The API endpoints existed for this already, so this PR just adds CLI
functionality which uses those API endpoints.

closes #21891 

Generated with the help of Mux

cli/testdata/coder_organizations_--help.golden

@@ -9,6 +9,7 @@ USAGE:
 
 SUBCOMMANDS:
     create      Create a new organization.
+    delete      Delete an organization
     members     Manage organization members
     roles       Manage organization roles.
     settings    Manage organization settings.

cli/testdata/coder_organizations_delete_--help.golden

@@ -0,0 +1,15 @@
+coder v0.0.0-devel
+
+USAGE:
+  coder organizations delete [flags] <organization_name_or_id>
+
+  Delete an organization
+
+  Aliases: rm
+
+OPTIONS:
+  -y, --yes bool
+          Bypass confirmation prompts.
+
+———
+Run `coder --help` for a list of global options.