Bluetooth: Add interactive connection and disconnection commands
Bluetooth: Add interactive connection and disconnection commands

Adds above commands to the shell app.
Connection is made based on given address and type eg:
btshell> connect 00:00:00:00:00:00 public

In callback we get local connection id which is in fact,
the number of array entry in which the pointer to the corresponding
bt_conn has been written.

To disconnect, just provide the id eg:
btshell> disconnect 0

Change-Id: I24f7ec2de7f84c53ab847ded28a1821753c2a60d
Signed-off-by: Mariusz Skamra <c73850bd0bf85e95dce44c2ce1418ca55c1b6c5d@tieto.com>

finikorg/zephyr,pklazy/zephyr,fractalclone/zephyr-riscv,holtmann/zephyr,Vudentz/zephyr,runchip/zephyr-cc3200,punitvara/zephyr,GiulianoFranchetto/zephyr,coldnew/zephyr-project-fork,galak/zephyr,tidyjiang8/zephyr-doc,explora26/zephyr,bboozzoo/zephyr,runchip/zephyr-cc3220,zephyrproject-rtos/zephyr,runchip/zephyr-cc3220,ldts/zephyr,runchip/zephyr-cc3220,rsalveti/zephyr,pklazy/zephyr,galak/zephyr,rsalveti/zephyr,nashif/zephyr,mbolivar/zephyr,bigdinotech/zephyr,kraj/zephyr,fractalclone/zephyr-riscv,mirzak/zephyr-os,punitvara/zephyr,erwango/zephyr,runchip/zephyr-cc3220,coldnew/zephyr-project-fork,bboozzoo/zephyr,fbsder/zephyr,galak/zephyr,GiulianoFranchetto/zephyr,mbolivar/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr,kraj/zephyr,bboozzoo/zephyr,sharronliu/zephyr,jamesonwilliams/zephyr-kernel,nashif/zephyr,zephyriot/zephyr,pklazy/zephyr,zephyriot/zephyr,holtmann/zephyr,sharronliu/zephyr,aceofall/zephyr-iotos,explora26/zephyr,holtmann/zephyr,coldnew/zephyr-project-fork,bigdinotech/zephyr,jamesonwilliams/zephyr-kernel,runchip/zephyr-cc3220,Vudentz/zephyr,bboozzoo/zephyr,finikorg/zephyr,bboozzoo/zephyr,punitvara/zephyr,pklazy/zephyr,32bitmicro/zephyr,erwango/zephyr,fbsder/zephyr,fbsder/zephyr,fractalclone/zephyr-riscv,jamesonwilliams/zephyr-kernel,aceofall/zephyr-iotos,32bitmicro/zephyr,fbsder/zephyr,32bitmicro/zephyr,ldts/zephyr,tidyjiang8/zephyr-doc,zephyrproject-rtos/zephyr,erwango/zephyr,runchip/zephyr-cc3200,mirzak/zephyr-os,jamesonwilliams/zephyr-kernel,galak/zephyr,ldts/zephyr,rsalveti/zephyr,sharronliu/zephyr,fractalclone/zephyr-riscv,tidyjiang8/zephyr-doc,mirzak/zephyr-os,aceofall/zephyr-iotos,32bitmicro/zephyr,runchip/zephyr-cc3200,zephyrproject-rtos/zephyr,tidyjiang8/zephyr-doc,explora26/zephyr,punitvara/zephyr,explora26/zephyr,explora26/zephyr,aceofall/zephyr-iotos,sharronliu/zephyr,GiulianoFranchetto/zephyr,fbsder/zephyr,ldts/zephyr,runchip/zephyr-cc3200,zephyrproject-rtos/zephyr,coldnew/zephyr-project-fork,punitvara/zephyr,bigdinotech/zephyr,finikorg/zephyr,finikorg/zephyr,Vudentz/zephyr,ldts/zephyr,kraj/zephyr,nashif/zephyr,sharronliu/zephyr,zephyriot/zephyr,nashif/zephyr,mirzak/zephyr-os,mirzak/zephyr-os,finikorg/zephyr,Vudentz/zephyr,aceofall/zephyr-iotos,rsalveti/zephyr,rsalveti/zephyr,jamesonwilliams/zephyr-kernel,pklazy/zephyr,mbolivar/zephyr,coldnew/zephyr-project-fork,erwango/zephyr,bigdinotech/zephyr,zephyriot/zephyr,bigdinotech/zephyr,mbolivar/zephyr,GiulianoFranchetto/zephyr,mbolivar/zephyr,galak/zephyr,kraj/zephyr,holtmann/zephyr,32bitmicro/zephyr,GiulianoFranchetto/zephyr,kraj/zephyr,fractalclone/zephyr-riscv,holtmann/zephyr,tidyjiang8/zephyr-doc,nashif/zephyr,erwango/zephyr,runchip/zephyr-cc3200,zephyriot/zephyr,Vudentz/zephyr