Install pywin requirement with prehook

pype/hooks/photoshop/prelaunch.py

@@ -0,0 +1,23 @@
+import pype.lib
+from pype.api import Logger
+
+
+class PhotoshopPrelaunch(pype.lib.PypeHook):
+    """This hook will check for the existence of PyWin
+
+    PyWin is a requirement for the Photoshop integration.
+    """
+    project_code = None
+
+    def __init__(self, logger=None):
+        if not logger:
+            self.log = Logger().get_logger(self.__class__.__name__)
+        else:
+            self.log = logger
+
+        self.signature = "( {} )".format(self.__class__.__name__)
+
+    def execute(self, *args, env: dict = None) -> bool:
+        output = pype.lib._subprocess(["pip", "install", "pywin32==227"])
+        self.log.info(output)
+        return True