[FL-2256] USB Service (#998)

* usb service, removed power observer
* fix usb restart after disable
* remove usb service from apps
* Applcations: remove dead extern
* New thread naming scheme for drivers
* New thread symbol naming scheme for drivers

Co-authored-by: あく <alleteam@gmail.com>

applications/applications.mk

@@ -18,7 +18,6 @@ SRV_INPUT	= 1
 SRV_LOADER	= 1
 SRV_NOTIFICATION = 1
 SRV_POWER	= 1
-SRV_POWER_OBSERVER = 1
 SRV_RPC = 1
 SRV_STORAGE	= 1
 
@@ -256,13 +255,6 @@ endif
 endif
 
 
-SRV_POWER_OBSERVER ?= 0
-ifeq ($(SRV_POWER_OBSERVER), 1)
-CFLAGS		+= -DSRV_POWER_OBSERVER
-SRV_POWER	= 1
-endif
-
-
 SRV_POWER ?= 0
 ifeq ($(SRV_POWER), 1)
 CFLAGS		+= -DSRV_POWER