chore: add script for generating list of external contributors

Related: libp2p/blog#84.

Pull-Request: #4095.


  
Co-Authored-By: Thomas Eizinger <thomas@eizinger.io>

scripts/list-external-contributors.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+# Usage: ./scripts/list-external-contributors.sh <TAG>
+
+set -e
+
+date_of_tag=$(git log -1 --format=%aI --date=iso-strict $1)
+unique_authors=$(gh api "repos/libp2p/rust-libp2p/commits?since=$date_of_tag" --paginate -q '.[].author.login' | sort -u)
+rust_libp2p_maintainers_team_members=$(gh api teams/6797340/members --paginate | jq -r '.[].login' | sort -u)
+
+echo "$unique_authors" | grep -vxF -f <(echo "$rust_libp2p_maintainers_team_members") | grep -vF "bot" | grep -vF "web-flow"