GitHub Workflow Action to run cpplint

Optional Inputs:

• extensions: c++ extensions to pass to cpplint, as a comma separated string
• headers: c++ header types to pass to cpplint, as a comma separated string
• filter: filter to pass to cpplint, defaults to all checks
• excludes: excludes to pass to cpplint, as a comma separated string

Simple example, ignore copyright warnings

uses: thompsonja/cpplint-action@0.3.0
with:
  headers: "h,hpp"
  extensions: "c,cpp,cc,h,hpp"
  filter: "-legal/copyright"

Ignore files in third_party

uses: "thompsonja/cpplint-action@0.3.0"
with:
  headers: "h,hpp"
  extensions: "c,cpp,cc,h,hpp"
  excludes: "third_party/*"