alias for color type and added read() to globals

.vscode/settings.json

@@ -10,6 +10,7 @@
         "textutils",
         "shell",
         "settings",
-        "window"
+        "window",
+        "read"
     ]
 }

scada-common/types.lua

@@ -22,6 +22,10 @@ local types = {}
 ---@field reactor integer
 ---@field rsio table|nil
 
+-- ALIASES --
+
+---@alias color integer
+
 -- ENUMERATION TYPES --
 
 ---@alias TRI_FAIL integer