Start work on types

Bring in typings folder for adafruit_ble and micropython

typings/adafruit_ble/attributes/__init__.pyi

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+"""
+This type stub file was generated by pyright.
+"""
+
+import _bleio
+
+"""
+:py:mod:`~adafruit_ble.attributes`
+====================================================
+
+This module provides definitions common to all kinds of BLE attributes,
+specifically characteristics and descriptors.
+
+"""
+__version__ = ...
+__repo__ = ...
+class Attribute:
+    """Constants describing security levels.
+
+    .. data:: NO_ACCESS
+
+       security mode: access not allowed
+
+    .. data:: OPEN
+
+       security_mode: no security (link is not encrypted)
+
+    .. data:: ENCRYPT_NO_MITM
+
+       security_mode: unauthenticated encryption, without man-in-the-middle protection
+
+    .. data:: ENCRYPT_WITH_MITM
+
+       security_mode: authenticated encryption, with man-in-the-middle protection
+
+    .. data:: LESC_ENCRYPT_WITH_MITM
+
+       security_mode: LESC encryption, with man-in-the-middle protection
+
+    .. data:: SIGNED_NO_MITM
+
+       security_mode: unauthenticated data signing, without man-in-the-middle protection
+
+    .. data:: SIGNED_WITH_MITM
+
+       security_mode: authenticated data signing, without man-in-the-middle protection"""
+    NO_ACCESS = ...
+    OPEN = ...
+    ENCRYPT_NO_MITM = ...
+    ENCRYPT_WITH_MITM = ...
+    LESC_ENCRYPT_WITH_MITM = ...
+    SIGNED_NO_MITM = ...
+    SIGNED_WITH_MITM = ...
+
+