add license ignore

Author: sebsto

.licenseignore

@@ -0,0 +1,34 @@
+.gitignore
+.licenseignore
+.swiftformatignore
+.spi.yml
+.swift-format
+.github/*
+*.md
+**/*.md
+CONTRIBUTORS.txt
+LICENSE.txt
+NOTICE.txt
+Package.swift
+Package@swift-*.swift
+Package.resolved
+**/*.docc/*
+**/.gitignore
+**/Package.swift
+**/Package.resolved
+**/docker-compose*.yaml
+**/docker/*
+**/.dockerignore
+**/Dockerfile
+**/Makefile
+**/*.html
+**/*-template.yml
+**/*.xcworkspace/*
+**/*.xcodeproj/*
+**/*.xcassets/*
+**/*.appiconset/*
+**/ResourcePackaging/hello.txt
+.mailmap
+.swiftformat
+*.yaml
+*.yml