[25517] Add notice of third party software

[MiguelCompany]

Description

Add a notice file to comply with the terms of third-party software used in this project.

@Mergifyio backport 4.3.x 4.0.x 3.0.x 1.2.x
NOTE: Backports may need modifications if different versions of the dependencies are used

Contributor Checklist

• Commit messages follow the project guidelines.
• N/A: Tests that thoroughly check the new feature have been added/Regression tests checking the bug and its fix have been added; the added tests pass locally
• N/A: Any new/modified methods have been properly documented.
• Changes are backport compatible: they do NOT break ABI nor change library core behavior.
• Changes are API compatible.
• Applicable backports have been included in the description.

Reviewer Checklist

• The PR has a milestone assigned.
• The title and description correctly express the PR's purpose.
• Check contributor checklist is correct.

[ZakariaTalbi]

I want to believe this file documents 2 of the 7 dependencies that end up in the built jar and, since the assembly plugin produces a jar-with-dependencies, everything bundled into it carries the same license obligation as what's declared directly in pom.xml (or at least I found so), not just the direct ones. I ran mvn dependency:tree and found 5 more resolved dependencies, pulled in transitively through antlr4 and stringtemplate rather than declared here:

• org.antlr:antlr4-runtime:4.5: BSD 3-Clause, same repo and tag as the antlr4 entry above (github.com/antlr/antlr4/blob/4.5/LICENSE.txt).

• org.antlr:ST4:4.0.8: BSD 3-Clause, but pull the text from the 4.0.8 tag specifically, not the default branch, since the copyright range differs between them (github.com/antlr/stringtemplate4/blob/4.0.8/LICENSE.txt).

• org.abego.treelayout:org.abego.treelayout.core:1.0.1: BSD 3-Clause, abego Software GmbH. This exact version isn't tagged in the repo, so the closest reference is the current LICENSE file on master (github.com/abego/treelayout/blob/master/LICENSE).

• org.antlr:antlr-runtime:3.5.2: BSD according to the artifact's own POM, but I couldn't track down the actual license text anywhere. There's no LICENSE file in the repo at this tag, and the URL the POM itself points to is dead. This needs a decision on where the text should come from rather than a guess.

• antlr:antlr:2.7.7: this one isn't BSD. It's a separate public domain notice with an attribution request (antlr2.org/license.html), so it shouldn't reuse the BSD template the other entries use.

[ZakariaTalbi]

Suggested change

	Copyright (c) 2012-2014 The ANTLR Project. All rights reserved.
	Redistribution and use in source and binary forms, with or without
	modification, are permitted provided that the following conditions
	are met:
	1. Redistributions of source code must retain the above copyright
	notice, this list of conditions and the following disclaimer.
	2. Redistributions in binary form must reproduce the above copyright
	notice, this list of conditions and the following disclaimer in the
	documentation and/or other materials provided with the distribution.
	3. Neither the name of the copyright holder nor the names of its
	contributors may be used to endorse or promote products derived from
	this software without specific prior written permission.
	THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	Copyright (c) 2015 Terence Parr, Sam Harwell
	All rights reserved.
	Redistribution and use in source and binary forms, with or without
	modification, are permitted provided that the following conditions
	are met:
	1. Redistributions of source code must retain the above copyright
	notice, this list of conditions and the following disclaimer.
	2. Redistributions in binary form must reproduce the above copyright
	notice, this list of conditions and the following disclaimer in the
	documentation and/or other materials provided with the distribution.
	3. The name of the author may not be used to endorse or promote products
	derived from this software without specific prior written permission.
	THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
	IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
	IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
	INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.