remove gcode int/ext macros (unused) and repurpose type system to identify features in gcode output

src/kiri/conf.js

@@ -127,8 +127,6 @@
             gcodeLayer: valueOf(cmd.layer || code.layer, []),
             gcodePre: valueOf(code.pre, []),
             gcodePost: valueOf(code.post, []),
-            gcodeExt: valueOf(code.ext, []),
-            gcodeInt: valueOf(code.int, []),
             // post processor script of which only one exists
             // for XYZ.daVinci.Mini.w triggered in kiri.export
             // in the fdm driver to turn gcode into base64
@@ -287,8 +285,6 @@
                     maxHeight: 150,
                     gcodePre: [],
                     gcodePost: [],
-                    gcodeExt: [],
-                    gcodeInt: [],
                     gcodeProc: "",
                     gcodeFan: [],
                     gcodeTrack: [],