feat: use isproj-only project files and local settings

Closes #6

src/scripts/Prepare-EgbimMsixSample.py

@@ -179,8 +179,8 @@ def main():
             "capabilities": ["runFullTrust"], "extensions": [], "dependencies": []}},
         "targets": [{"id": "msix-direct", "format": "msix", "delivery": "package", "distribution": "direct",
                      "signingProfileRef": None}]}
-    write_json(out / "package-project.json", project)
-    write_json(out / "package-project.local.json", {"sources": local_sources, "makeAppx": str(args.makeappx.resolve())})
+    write_json(out / "InstallerProject.isproj", project)
+    write_json(out / "InstallerProject.isproj.local.json", {"sources": local_sources, "makeAppx": str(args.makeappx.resolve())})
     write_json(out / "reports/file-mapping.json", mappings)
     with (out / "reports/file-mapping.csv").open("w", encoding="utf-8-sig", newline="") as f:
         writer = csv.DictWriter(f, fieldnames=list(mappings[0])); writer.writeheader(); writer.writerows(mappings)