Protections refactor

[g0nz4I0]

Bunch of changes review carefully:

RTC:

• Created a global static entity to allow direct access and usage as a variable within a Packet
• Moved to a separate file (minor stuff)

Boundary:

• Sending now uses standard packets, containing (roughly):

    id(TBD) | format_id | boundary_type_id | name_len | name |
    < Boundary metrics> |     < Boundary metrics> |     < Boundary metrics> |
   RTC data |    RTC data |    RTC data |    RTC data |    RTC data |
   RTC data |    RTC data |    RTC data |    RTC data |    RTC data |

Protection Manager:

• Added an initialize() method that sets the name of all the boundaries registered, since it does not make any sense to have to do it every time you want to send it

Discarded the notification class, still have to revisit the functionality,
Unified the TIME_ACCUMULATION specialization instead of having the same one for doubles and floats

[ricardochust]

Remember to add a bit of doxygen documentation when its all working

[StefanCostea]

LGTM