Add psycopg2 stubs to project

Author: aleksanb

psycopg2/__init__.pyi

@@ -0,0 +1,12 @@
+# Stubs for psycopg2 (Python 3.7)
+#
+# NOTE: This dynamically typed stub was automatically generated by stubgen.
+
+from typing import Any, Optional
+
+def connect(
+    dsn: Optional[Any] = ...,
+    connection_factory: Optional[Any] = ...,
+    cursor_factory: Optional[Any] = ...,
+    **kwargs: Any
+): ...

psycopg2/_ipaddress.pyi

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+# Stubs for psycopg2._ipaddress (Python 3.7)
+#
+# NOTE: This dynamically typed stub was automatically generated by stubgen.
+
+from typing import Any, Optional
+
+ipaddress: Any
+
+def register_ipaddress(conn_or_curs: Optional[Any] = ...) -> None: ...
+def cast_interface(s: Any, cur: Optional[Any] = ...): ...
+def cast_network(s: Any, cur: Optional[Any] = ...): ...
+def adapt_ipaddress(obj: Any): ...

psycopg2/_json.pyi

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+# Stubs for psycopg2._json (Python 3.7)
+#
+# NOTE: This dynamically typed stub was automatically generated by stubgen.
+
+from typing import Any, Optional
+
+JSON_OID: int
+JSONARRAY_OID: int
+JSONB_OID: int
+JSONBARRAY_OID: int
+
+class Json:
+    adapted: Any = ...
+    def __init__(self, adapted: Any, dumps: Optional[Any] = ...) -> None: ...
+    def __conform__(self, proto: Any): ...
+    def dumps(self, obj: Any): ...
+    def prepare(self, conn: Any) -> None: ...
+    def getquoted(self): ...
+
+def register_json(
+    conn_or_curs: Optional[Any] = ...,
+    globally: bool = ...,
+    loads: Optional[Any] = ...,
+    oid: Optional[Any] = ...,
+    array_oid: Optional[Any] = ...,
+    name: str = ...,
+): ...
+def register_default_json(conn_or_curs: Optional[Any] = ..., globally: bool = ..., loads: Optional[Any] = ...): ...
+def register_default_jsonb(conn_or_curs: Optional[Any] = ..., globally: bool = ..., loads: Optional[Any] = ...): ...