[algorithms] Click implementation of algo commands

Reimplement algorithms existing
commands using  plugin-based command line mechanism (Click).

beat/cmdline/libraries.py

@@ -177,7 +177,7 @@ def path(ctx, names):
   return common.display_local_path(ctx.meta['config'].path, 'library', names)
 
 
-@library.command()
+@libraries.command()
 @click.argument('name', nargs=1)
 @click.pass_context
 def edit(ctx, name):