Add encoder lib; Custom task, init - functional

currently handles encoder connected to pins configured in encoder.hpp
and receives and logs all available events in encoder task
Works as expected

TODO: migrate with previous implementation of commands in button.cpp

components/encoder/Kconfig

@@ -0,0 +1,27 @@
+menu "Rotary encoders"
+
+	config RE_MAX
+		int "Maximum number of rotary encoders"
+		default 1
+			
+	config RE_INTERVAL_US
+		int "Polling interval, us"
+		default 1000
+		
+	config RE_BTN_DEAD_TIME_US
+		int "Button dead time, us"
+		default 10000
+			
+	choice RE_BTN_PRESSED_LEVEL
+		prompt "Logical level on pressed button"
+		config RE_BTN_PRESSED_LEVEL_0
+			bool "0"
+		config RE_BTN_PRESSED_LEVEL_1
+			bool "1"
+	endchoice
+	
+	config RE_BTN_LONG_PRESS_TIME_US
+		int "Long press timeout, us"
+		default 500000
+
+endmenu