fix(cli): add functionality to change output dir

Before, the --output option for the source-merge command was just
ignored.

Fixes: 3ad934d ("feat(merger): add infrastructure to create ...")
Signed-off-by: Tamino Larisch <[email protected]>

Author: tamilari

src/debsbom/repack/merger.py

@@ -41,6 +41,7 @@ def __init__(
     ):
         self.dldir = dldir
         self.outdir = outdir or dldir
+        self.outdir.mkdir(exist_ok=True, parents=True)
         self.compress = compress
         self.dpkg_source = shutil.which("dpkg-source")
         if not self.dpkg_source:
@@ -89,7 +90,9 @@ def merge(self, p: package.SourcePackage, apply_patches: bool = False) -> Path:
         dsc = self.locate_artifact(p, self.dldir)
         if not dsc:
             raise DscFileNotFoundError(p.dscfile())
-        merged = dsc.with_suffix(suffix)
+        dir = self.outdir / dsc.parent.name
+        dir.mkdir(exist_ok=True)
+        merged = dir / dsc.with_suffix(suffix).name
         if self.compress:
             merged = merged.with_suffix(f"{merged.suffix}{self.compress.fileext}")