add PackageKeyword SQLAlchemy ORM model

Signed-off-by: Kevin Morris <kevr@0cost.org>

aurweb/models/package_keyword.py

@@ -0,0 +1,20 @@
+from sqlalchemy.orm import mapper
+
+from aurweb.db import make_relationship
+from aurweb.models.package_base import PackageBase
+from aurweb.schema import PackageKeywords
+
+
+class PackageKeyword:
+    def __init__(self,
+                 PackageBase: PackageBase = None,
+                 Keyword: str = None):
+        self.PackageBase = PackageBase
+        self.Keyword = Keyword
+
+
+mapper(PackageKeyword, PackageKeywords, properties={
+    "PackageBase": make_relationship(PackageBase,
+                                     PackageKeywords.c.PackageBaseID,
+                                     "keywords")
+})