dockerignore v0.1.0

Matcher semantics and adapted test data in this project derive from
`moby/patternmatcher` v0.6.1, copyright Docker, Inc., and are licensed under
the Apache License, Version 2.0.

Upstream tag:
https://github.com/moby/patternmatcher/tree/v0.6.1

Upstream commit SHA:
5a6d8429a19bb6948a372ff19e86fe83599a04b7

The applicable upstream license text is included unmodified at
LICENSES/Apache-2.0.txt.

The dependency-free Unicode category, script, and alias data in
lib/dockerignore/unicode15.ex is generated from the Go 1.26.0 standard library
(Unicode 15.0.0) by scripts/oracle/generate_unicode15. Copyright 2009 The Go
Authors. It is available under the BSD 3-Clause License; the applicable text is
included unmodified at LICENSES/BSD-3-Clause-Go.txt.