Add cpplint linter

autoload/ale/handlers/cpplint.vim

@@ -0,0 +1,20 @@
+" Author: Dawid Kurek https://github.com/dawikur
+" Description: Handle errors for cpplint.
+
+function! ale#handlers#cpplint#HandleCppLintFormat(buffer, lines) abort
+    " Look for lines like the following.
+    " test.cpp:5:  Estra space after ( in function call [whitespace/parents] [4]
+    let l:pattern = '^.\{-}:\(\d\+\): \(.\+\)'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        call add(l:output, {
+        \   'lnum': l:match[1] + 0,
+        \   'col': 0,
+        \   'text': l:match[2],
+        \   'type': 'W',
+        \})
+    endfor
+
+    return l:output
+endfunction