feat(sasts): provide CPU_COUNT for SAST tool's command

Author: nolliv22

codesectools/sasts/tools/Cppcheck/sast.py

@@ -13,6 +13,7 @@
     SASTRequirements,
 )
 from codesectools.sasts.tools.Cppcheck.parser import CppcheckAnalysisResult
+from codesectools.utils import CPU_COUNT
 
 
 class CppcheckSAST(PrebuiltBuildlessSAST):
@@ -51,6 +52,7 @@ class CppcheckSAST(PrebuiltBuildlessSAST):
             "--xml",
             "--output-file=cppcheck_output.xml",
             "--cppcheck-build-dir={tempdir}",
+            f"-j{CPU_COUNT}",
         ]
     ]
     valid_codes = [0]

codesectools/utils.py

@@ -223,3 +223,6 @@ def shorten_path(p: str) -> str:
     if len(path.parts) > 3:
         return str(Path("...") / path.parts[-2] / path.parts[-1])
     return p
+
+
+CPU_COUNT = os.cpu_count()