acrn-config: assign VM IDs for dynamic scenario and launch setting

When dynamically creating or adding or deleting VMs, acrn config app
will assign VM IDs for the VMs with the orders of prelaunched VMs and SOS
VM and postlaunched VMs to be consistent with the VM order of vm_configs
in vm configuration. When dynamically creating launch scripts, acrn
config app will let users to specify the VM ID before launch setting.

Tracked-On: #4641

Signed-off-by: Shuang Zheng <shuang.zheng@intel.com>
Acked-by: Terry Zou <terry.zou@intel.com>

misc/acrn-config/xmls/config-xmls/template/LAUNCH_POST_RT_VM.xml

@@ -6,7 +6,7 @@
 		<gvt_args configurable="0" desc="GVT settings. Set it to gvtd for GVTd, otherwise is GVTg arguments. The recommendation arguments for GVTg is 64 448 8. Leave it blank to disable GVT."></gvt_args>
 		<vbootloader desc="virtual bootloader method" readonly="true">ovmf</vbootloader>
 		<vuart0 desc="vUART0 which emulated by device model"></vuart0>
-		<cpu_sharing desc="Whether the binding pCPUs are sharing with other VMs." readonly="true">Disabled</cpu_sharing>
+		<cpu_sharing desc="Whether the binding pCPUs are sharing with other VMs."></cpu_sharing>
 		<poweroff_channel desc="the method of power off uos"></poweroff_channel>
 		<usb_xhci desc="USB xHCI mediator configuration. input format: bus#-port#[:bus#-port#: ...]. e.g.: 1-2:2-4"></usb_xhci>