Add terminal service session info

[jkroepke]

Added details session metric information.

windows_terminal_services_session_info{host="",session_name="RDP-tcp 0",state="active",user="domain\\user"} 1
windows_terminal_services_session_info{host="",session_name="RDP-tcp 0",state="connect_query",user="domain\\user"} 0
windows_terminal_services_session_info{host="",session_name="RDP-tcp 0",state="connected",user="domain\\user"} 0
windows_terminal_services_session_info{host="",session_name="RDP-tcp 0",state="disconnected",user="domain\\user"} 0
windows_terminal_services_session_info{host="",session_name="RDP-tcp 0",state="down",user="domain\\user"} 0
windows_terminal_services_session_info{host="",session_name="RDP-tcp 0",state="idle",user="domain\\user"} 0
windows_terminal_services_session_info{host="",session_name="RDP-tcp 0",state="init",user="domain\\user"} 0
windows_terminal_services_session_info{host="",session_name="RDP-tcp 0",state="listen",user="domain\\user"} 0
windows_terminal_services_session_info{host="",session_name="RDP-tcp 0",state="reset",user="domain\\user"} 0
windows_terminal_services_session_info{host="",session_name="RDP-tcp 0",state="shadow",user="domain\\user"} 0

• Normalize Session name is equal across terminal_services and remote_fx collectors
• Remove session counter metrics (can be replace with count(windows_terminal_services_session_info{host="", state="active"})
• Merge different CPU metrics into one.