Added License File

LICENSE

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+© 2023 Snap Inc. All Rights Reserved.
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+Access to or use of Camera Kit and its associated documentation, software code, and other materials (collectively, “Camera Kit”), made available by Snap Inc. and its affiliates ("Snap"), is subject to the Snap Camera Kit Terms, which you have already accepted and can be found at:
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+https://www.snap.com/terms/snap-camera-kit
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+If you no longer want to be a party to these terms, or if you do not agree to all of these terms, do not use or otherwise access Camera Kit and notify Snap immediately. Camera Kit may contain Snap confidential information.
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+Separately, this Camera Kit Unity Integration is licensed under the MIT License as reproduced below.
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+© 2023 Snap Inc. All Rights Reserved.
+
+MIT License
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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