wip collection of j2 templates to configure routeros

## opinionated areas
### interfaces.rsc.j2
* currently only bridging support
* you must create an interface of type bridge and assign all members to it.
* if no pvid is set, no untagged packets are allowed
* mode tagged-all configures all vlans in site of device and **DOES NOT DISABLE FILTERING**
* mode tagged configures tagged and or untagged (as you'd expect)
* mode access restricts to pvid tagged or untagged