feat: add manager, entry and command

project_manager/nodejs/command.py

@@ -0,0 +1,18 @@
+from ..command import Command
+
+__all__ = ("NpmCommand",)
+
+
+class NpmCommand(Command):
+    EXECUTOR: str = "npm"
+
+    def __init__(self, *args: str) -> None:
+        super().__init__(self.EXECUTOR, *args)
+
+    @classmethod
+    def install(cls) -> "NpmCommand":
+        return cls("install")
+
+    @classmethod
+    def install_clean(cls) -> "NpmCommand":
+        return cls("install-clean")