oeqa/selftest: Add SPDX 3.0 include source case for work-share

oeqa/selftest: Add SPDX 3.0 include source case for work-share

Build gcc and check gcc-14.2.0/README in objset is available

$ oe-selftest -r spdx.SPDX30Check.test_gcc_include_source
...
2024-10-26 01:24:57,063 - oe-selftest - INFO - test_gcc_include_source (spdx.SPDX30Check.test_gcc_include_source)
2024-10-26 01:28:24,204 - oe-selftest - INFO - The spdxId of gcc-14.2.0/README in gcc.spdx.json is http://spdx.org/spdxdocs/gcc-f2eaeb0d-b54b-53ba-899a-8c36c21139bf/88d5068ffd41e5ea6b4e0dd390b23bf499bb2b6674a41e09eaf2a887eced16c8/sourcefile/42
2024-10-26 01:28:26,369 - oe-selftest - INFO -  ... ok
2024-10-26 01:28:33,315 - oe-selftest - INFO - ----------------------------------------------------------------------
2024-10-26 01:28:33,316 - oe-selftest - INFO - Ran 1 test in 216.457s
2024-10-26 01:28:33,316 - oe-selftest - INFO - OK
2024-10-26 01:28:45,254 - oe-selftest - INFO - RESULTS:
2024-10-26 01:28:45,254 - oe-selftest - INFO - RESULTS - spdx.SPDX30Check.test_gcc_include_source: PASSED (209.31s)
2024-10-26 01:28:45,260 - oe-selftest - INFO - SUMMARY:
2024-10-26 01:28:45,260 - oe-selftest - INFO - oe-selftest () - Ran 1 test in 216.457s
2024-10-26 01:28:45,260 - oe-selftest - INFO - oe-selftest - OK - All required tests passed (successes=1, skipped=0, failures=0, errors=0)

Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Reviewed-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>