Populate MICROBIT_DAL_VERSION and add microbit_dal_version().

[microbit-carlos]

This PR required the latest commit from codal-core from PR:

• Better version support symbols for user applications codal-core#169

And with these two PRs we can get the following defines and function outputs:

CODAL_VERSION_MAJOR: 0
CODAL_VERSION_MINOR: 2
CODAL_VERSION_PATCH: 66
CODAL_VERSION_HASH: 8c8db00
CODAL_TARGET_NAME: codal-microbit-v2
CODAL_VERSION: 0.2.66
CODAL_VERSION_LONG: 0.2.66+codal-microbit-v2-8c8db00
DEVICE_DAL_VERSION: 0.2.66
MICROBIT_DAL_VERSION: 0.2.66
microbit_dal_version(): 0.2.66
uBit.getVersion(): 0.2.66

[github-actions]

Build diff

Base commit: 41e7a25544de26ef1682f7ac21edfd0f7b23a7e9
Action run: https://github.com/lancaster-university/codal-microbit-v2/actions/runs/9875388569

     VM SIZE    
 -------------- 
  +0.8%     +16    /home/runner/work/codal-microbit-v2/codal-microbit-v2/libraries/codal-core/source/drivers/AnimatedDisplay.cpp
  +0.0%     +16    TOTAL

[microbit-carlos]

As the additions are #defines, and the microbit_dal_version() function is not used in the built samples the "build diff" should have been zero, but because codal-core has been updated, this unrelated bug fix has caused the additional memory consumption:
lancaster-university/codal-core@df05db9