FIX: BLESecurity.h -> BLESecurityCallbacks.
FIX: BLESecurity.h -> BLESecurityCallbacks.

Make all the methods pure virtual.
Some of the methods were virtual, but without local definitions,
this creates an error during linking.

nkolban/esp32-snippets,nkolban/esp32-snippets,nkolban/esp32-snippets,nkolban/esp32-snippets,nkolban/esp32-snippets