GATT service (like GAP one) should be moved to the core attribute server
because there can be only one instance of it.
There was a "Attribute Opcodes Supported" characteristic inside the GATT
service in attrib/example.c which is not defined by the Core
specification and was removed before moving the code.
GAP service shall be registered only once, so it makes sense to move it
to the core attribute server code.
The GAP "Device Name" characteristic was always "Example Device" on the
example server. This has been changed to use the Name attribute from
main.conf.
Add enums for attribute read/write requirements, which may be "none",
"authentication required" or "authorization required". Additionally, a
"not permitted" requirement means that operation is not permitted,
allowing read-only or write-only attributes.
The attrib_db_add() API was changed to allow setting these requirements,
and the example server was changed to set requirements for its
attributes.
Add an optional Client Characteristic Configuration attribute for
Battery State to control which clients want notification/indication
when this attribute value changes.
Thermometer Humidity Service contains <<Include>> attributes that it is
not supported at the momment. For this service, Characteristics D-Bus
paths are not being registered properly. This patch allows watchers
testing registered for Battery State changes.
This primary service contains 128-bit UUIDs on the service declaration
and characteristic declaration attributes, useful to test the 128-bit
UUID support.
Add all attributes of the Thermometer Primary Service according to
example described in the SPEC. See "APPENDIX: Example Attribute
server attributes". Includes of secondary services are not supported yet.
Add all attributes of the Battery Primary Service according to example
described in the SPEC. See "APPENDIX: Example Attribute server
attributes". Battery service and state UUID are not defined yet, random
values have been selected: 0xA002 and 0xA003.
Add all attributes of the GATT Primary Service according to example
described in the SPEC. See "APPENDIX: Example Attribute server
attributes". Attribute Opcodes Supported UUID is not defined yet, a
random value has been selected: 0xA001.
Initial changes to start the GATT server example. For the server side,
attrib plugin will only register the GATT service record and add
the attributes into the attribute database.
