Add LICENSE.md

This is only really necessary due to FabricFastBench not properly declaring a license in the repository,
but declaring one on CurseForge.

LICENSE.md

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+# License
+
+This mod, QuickBench & Tweaks, is licensed under the [MIT] license, inherited from the upstreams,
+[FastWorkbench for Forge][FastWorkbench-git] and [FastBench for Fabric][FabricFastBench-git],
+made by [Shadows of Fire] and [Tfarcenim] respectively.
+
+Due to the lack of clarity from the upstream repository,
+FabricFastBench is assumed to have been licensed under the [MIT] license,
+as its upstream, FastWorkbench is licensed as [MIT],
+and the [CurseForge project][FabricFastBench-curse] claims it is also licensed as [MIT],
+unlike the [GitHub repository][FabricFastBench-git], which claims it's licensed as [CC0-1.0].
+
+It is maybe fair to assume
+that the code solely produced by [Tfarcenim] maybe used under the [CC0-1.0] when without context.
+However, given the original README.md stated that the template was under the [CC0-1.0], and everything else says [MIT],
+it should be assumed the license of choice was intended to be [MIT].
+
+Several contributions from [Ampflower] are also available under [CC0-1.0],
+and will be clearly marked in the license header of each file.
+You may freely use snippets or full copies of code solely contributed by Ampflower under the terms of the [CC0-1.0].
+If the snippets have been combined, remixed or derived from the surrounding code,
+you must assume the terms of the [MIT] license may be applied.
+
+Both the [CC0-1.0] and [MIT] licenses are provided for reference.
+
+## Disclaimer:
+
+The dates and names used within the copyright header have been reconstructed based on the licenses and git history of
+both [FastWorkbench][FastWorkbench-git] and [FastBench for Fabric][FabricFastBench-git].
+
+<!-- --- Links below --- -->
+
+[Shadows of Fire]: https://github.com/Shadows-of-Fire
+
+[Tfarcenim]: https://github.com/Tfarcenim
+
+[Ampflower]: https://github.com/Ampflower
+
+[FastWorkbench-git]: https://github.com/Shadows-of-Fire/FastWorkbench
+
+[FastWorkbench-curse]: https://www.curseforge.com/minecraft/mc-mods/fastworkbench
+
+[FabricFastBench-git]: https://github.com/Tfarcenim/FabricFastBench
+
+[FabricFastBench-curse]: https://www.curseforge.com/minecraft/mc-mods/fastbench-for-fabric
+
+[MIT]: LICENSE-MIT
+
+[CC0-1.0]: LICENSE-CC0