*DASH* doesn't implement this check into travis
1f379b1f0 Add tab char lint check and exclude imported dependencies (MeshCollider)
dd365612f Add a lint check for trailing whitespace. (Evan Klitzke)
Pull request description:
This is a new attempt at #11005
Addressed nits, excluded imported dependencies, squashed the original commits, and added a test for tab characters in the *.cpp *.h *.md *.py *.sh files too as per @practicalswift suggestion
Tree-SHA512: d2dfbedc8469026f39b0c63d9a71d8b8e2ed3815d69fecaabad10304d977d6345728c4c865ec7600ed539b1f7cabaa826b50312f4d2eef0a1583d4ff9024c36d
