Add cpp target

[NotHyper-474]

Lime has the cpp target which is like a global shortcut to linux, windows and mac targets using -cpp flag. It would be handy turning this

{
  "label": "Windows / Debug (Straight to Chart Editor)",
  "target": "windows",
  "args": ["-debug", "-DCHARTING", "-DFEATURE_DEBUG_FUNCTIONS"]
},
{
  "label": "Linux / Debug (Straight to Chart Editor)",
  "target": "linux",
  "args": ["-debug", "-DCHARTING", "-DFEATURE_DEBUG_FUNCTIONS"]
},
{
  "label": "MacOS / Debug (Straight to Chart Editor)",
  "target": "mac",
  "args": ["-debug", "-DCHARTING", "-DFEATURE_DEBUG_FUNCTIONS"]
}

Into just

{
   "label": "Any / Debug (Straight to Chart Editor)",
    "target": "cpp",
    "args": ["-debug", "-DCHARTING", "-DFEATURE_DEBUG_FUNCTIONS"]
},