fix(summer): delegate admin, route and key commands and pass all delegate flags through

- delegateCommands() builds every delegate from one table of name,
  description and common-flags hint; toolCommands appends it
- route:list, key:generate, admin:create and admin:reset-password are new
  delegates; the child keeps summer's stdin, so the password prompts work
- migrate:rollback, queue:work and schedule:run lose their hand-written
  flag copies: --plugin, --queue and --once now pass through verbatim
- the command list marks delegates with "(flags pass to the app binary)"
  and the help command prints a Long text with the common flags
- console introduction, setup-and-maintenance and the root README
  describe the passthrough behaviour and the new delegates

README.md

@@ -73,7 +73,7 @@ The `migrate`, `migrate:status`, `migrate:rollback`, `serve` and admin commands
    curl http://127.0.0.1:8080/items/1
    ```
 
-`summer migrate`, `summer migrate:status`, `summer migrate:rollback` and `summer serve`, run from the application directory, delegate to the built binary in `bin/`.
+`summer migrate`, `summer migrate:status`, `summer migrate:rollback`, `summer serve`, `summer queue:work`, `summer queue:clear`, `summer schedule:run`, `summer route:list`, `summer key:generate`, `summer admin:create` and `summer admin:reset-password`, run from the application directory, delegate to the built binary in `bin/` and pass their flags to it unchanged.
 
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