tools/btmgmt: add MGMT setting bit names for CIS feature support

tools/btmgmt: add MGMT setting bit names for CIS feature support

Add names for CIS Central/Peripheral MGMT setting bits:

[mgmt]# info
Index list with 1 item
hci0:	Primary controller
	addr XX:XX:XX:XX:XX:XX version 12 manufacturer 2 class 0x7c0104
	supported settings: powered connectable fast-connectable discoverable bondable link-security ssp br/edr le advertising secure-conn debug-keys privacy configuration static-addr phy-configuration wide-band-speech cis-central cis-peripheral
	current settings: powered bondable ssp br/edr le secure-conn cis-central cis-peripheral
	name xxx
	short name
hci0:	Configuration options
	supported options: public-address
	missing options: