Add CAN Layer2 Signal Based Logging example

[em1064]

Adds a new example demonstrating the Proemion CAN Layer 2 library
(V0.1.0.1) for signal-based logging using a delta-anchor threshold
strategy. Includes the compiled library, a complete self-contained
project archive (SalesDemo), and full documentation covering
FB_CAN_Setup, FB_CAN_Rx_Signal_REAL, FB_DeltaAnchorTrigger, and
FB_SignalTriggeredLogger.

Also updates .gitignore and .gitattributes to support the
.compiled-library file type.

[RaulSMS]

@em1064 thanks a lot, looks good, and the README is clear.

Nothing to add.

[RaulSMS]

@VKlueber if you want to checkout the changes, and since the branch comes from a fork from @em1064 you will not see the branch on the repo. But you can get it by git fetch origin pull/4/head:pr-4
This will create a local branch pr-4