There were a few places where nested namespace specifiers weren't being
used where they could be within the service code. This amends that to
make the namespacing a tiny bit more compact.
* Services/UDS: Added a function to generate the EAPoL-Start packet body.
* Services/UDS: Added filter for beacons.
* Services/UDS: Lock a mutex when accessing connection_status from both the emulation and network thread.
* Services/UDS: Handle the Association Response frame and respond with the EAPoL-Start frame.
* fixup: make use of current_node, changed received_beacons into a list, mutex and assert corrections
* fixup: fix damn clang-format