changed slider issue, fixed monitor bug, added basalt.isKeyDown(keys)

Slider: added setIndex() and changed setValue behaviour
Monitor: Changed monitor draw priority so input's cursor still shows (have to figure out why its even hiding)
added new function where you can check if a user is holding a key currently down

source/project/mainTop.lua

@@ -1,7 +1,7 @@
 local basalt = { debugger = true, version = 1 } 
 local activeFrame 
 local frames = {} 
-local keyModifier = {} 
+local keyActive = {} 
 local parentTerminal = term.current()
 
 local sub = string.sub