scripts: twister: Enchance TestCase/Instance info and presentation

ExecutionCounter has been expanded and now hold i.a.
more information on the statuses of TestCases.
This information is now incorporated in relevant summaries
- runner.py and reports.py.
Layout of those was changed to present that
and previous information in a clear and concise way.

TestInstance execution counter now is more intuitive.
Instances filtered out before running are no longer included there.
Retries now properly reset the counter.

TestCases with None and other incorrect final statuses
are logged as errors, but do not
exit Twister with a nonzero exit code.
This is because None statuses, although incorrect,
are currently common.

Inconsistent spacing in ERROR and FAILED fixed.

Signed-off-by: Lukasz Mrugala <lukaszx.mrugala@intel.com>

scripts: Dmitri fix

Fix of a problem noticed by Dmitri

Removed unnecessary additional spaces when
printing FAILED and ERROR status.
Now TwisterStatus.get_color is used more.

Signed-off-by: Lukasz Mrugala <lukaszx.mrugala@intel.com>