Support reloading bundles without restarting oasis-node

[matevz]

SUMMARY

Currently, there is no way to manually reload the bundle (e.g ROFL .orc) without restarting the whole oasis-node service. This is useful:

• when you're bugfixing your ROFL and don't want to make a new release+deployment each time
• when you're bugfixing your ROFL and don't use the new scheduler at all
• in the Localnet in "watch" mode, where your rofl folder is bind-mounted and a script would monitor any .orc updates to reload it automatically

I suggest sth like oasis-node control reload-bundle <path>

ISSUE TYPE

• Feature Idea

[gw0]

What about combining bundle and config reloading (#6154) into a single control reload command?