AMC: Add appl-demo-enc

[sgiraz]

What's new in this PR:

• A new application is available to test the encoder reading using the embot::hw::encoder and streaming the rawVaue + time over CAN network.
• Move the embot_hw_encoder.cpp to the right location

Note:

• The message CAN ID for this demo is 0x111
• The payload is formed as follows:

+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
 | Position             | 0x0                    | Time                  |  0x0 |
+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
   4 Byte                4 Byte                    4 Byte                  4 Byte

• All the payload data are presented in Little-Endian

[marcoaccame]

Ok, thanks @sgiraz