New pairing database

Goal is to write individual pairings (bonds) to separate file and have a more flexible file format. Currently all pairings (bonds) are stored in a single file (pairings.bin).

Goal is to store each pairing (bond) in a separate file in a pairings/ directory, named pairingN.bin (with N being 1,2,3,...). Each file stores a list of TLVs and has the version of the file format as first byte.

What I still want to implement:

• Remove ble.txt and mac.txt and use card10.cfg instead.

In the future I'd like to be able to read the other device's name after pairing and write that into the file so the user has an idea which device is represented by that pairing.

Documentation/card10-cfg.rst

@@ -43,5 +43,9 @@ Option name        Type       Description
 ------------------ ---------- -----------
 ``default_app``    String     Full path to the exectutable file of the default application. If this option is not set,``apps/analog_clock/__init__.py`` is used.
 ------------------ ---------- -----------
+``ble_enable``     Boolean    Activate the BLE interface. Turn off for more privacy or to conserve energy.
+------------------ ---------- -----------
+``ble_mac``        Boolean    MAC address used for BLE. Format: ``ca:4d:10:xx:xx:xx``.
+------------------ ---------- -----------
 ``ble_log_enable`` Boolean    Activate HCI level logging of BLE data. Creates a new btsnoop compatible log file named ``ble.log`` in the ``logs`` folder after each boot if BLE is activated. Keeps the last 10 files.
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