feat(badge): add LGTM

Signed-off-by: Felipe Zipitria <[email protected]>

README.md

@@ -5,7 +5,7 @@
 [![Go Doc](https://img.shields.io/badge/godoc-reference-blue.svg?style=flat-square)](http://godoc.org/github.com/fzipi/go-ftw)
 [![PkgGoDev](https://pkg.go.dev/badge/github.com/fzipi/go-ftw)](https://pkg.go.dev/github.com/fzipi/go-ftw)
 [![Release](https://img.shields.io/github/v/release/fzipi/go-ftw.svg?style=flat-square)](https://github.com/fzipi/go-ftw/releases/latest)
-[![FOSSA Status](https://app.fossa.com/api/projects/git%2Bgithub.com%2Ffzipi%2Fgo-ftw.svg?type=shield)](https://app.fossa.com/projects/git%2Bgithub.com%2Ffzipi%2Fgo-ftw?ref=badge_shield)
+[![Total alerts](https://img.shields.io/lgtm/alerts/g/fzipi/go-ftw.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/fzipi/go-ftw/alerts/)
 
 
 This software should be compatible with the [Python version](https://pypi.org/project/ftw/).