New Twister option `--footprint-report` is introduced to collect and
write detailed memory footprint results for symbols as an additional
JSON file. By default, the new option is disabled.
The new option implies and extends `--create-rom-ram-report`, so there
are three choices: 'ROM', 'RAM', and 'all' to select what memory area
symbols to report in `twister_footprint.json`.
In case of the custom report name, or per-platform report, it is always
composed with the rightmost '_footprint.json' suffix.
The memory footprint report has similar structure as `twister.json`
and compelements it having reduced set of test suite properties:
- instead of `testcases` it contains `footprint` object with
`rom.json` and `ram.json` artifacts embedded there;
- other properites are limited to represent only the essential test
suite context, thus to allow further data processing consistently
and independently from the `twister.json`.
- 'filtered' test instances are not included into the footprint report.
Signed-off-by: Dmitrii Golovanov <dmitrii.golovanov@intel.com>
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