tools/mgmt-tester: Add LL Privacy test cases

tools/mgmt-tester: Add LL Privacy test cases

This patch adds LL Privacy related test cases.

Multi Ext Advertising - Success 3 (Add 2 Advs)
Multi Ext Advertising - Success 4 (Remove Adv)
Multi Ext Advertising - Success 5 (Remove all)
Multi Ext Advertising - Success 6 (Add w/o power on)
Multi Ext Advertising - Fail (Add MAX)

LL Privacy - Add Device 1 (Add to AL)
LL Privacy - Add Device 2 (Add to RL)
LL Privacy - Add Device 3 (Enable RL)
LL Privacy - Add Device 4 (2 Devices to AL)
LL Privacy - Add Device 5 (2 Devices to RL)
LL Privacy - Add Device 6 (RL is full)
LL Privacy - Add Device 7 (WL is full)
LL Privacy - Add Device 8 (Disable Adv)
LL Privacy - Add Device 9 (Multi Adv)
LL Privacy - Add Device 10 (Multi Dev and Multi Adv)

LL Privacy - Remove Device 1 (Remove from AL)
LL Privacy - Remove Device 2 (Remove from RL)
LL Privacy - Remove Device 3 (Disable RL)
LL Privacy - Remove Device 4 (Disable Adv)
LL Privacy - Remove Device 5 (Multi Adv)

LL Privacy - Start Discovery 1 (Disable RL)
LL Privacy - Start Discovery 2 (Disable RL)

LL Privacy - Advertising 1 (Scan Results)
LL Privacy - Acceptor 1
LL Privacy - Acceptor 2

LL Privacy - Pair 1
LL Privacy - Pair 2 (Add to AL)
LL Privacy - Unpair 1
LL Privacy - Unpair 2 (Remove from AL)

Signed-off-by: Ayush Garg <ayush.garg@samsung.com>