chore: update license to MIT (#5)

LICENSE

@@ -1,5 +1,18 @@
-© 2021 Looker Data Sciences, Inc.  All rights reserved.
+Copyright 2024 Google LLC.
 
-By downloading, installing or otherwise using the source code files located in this GitHub repository (the “Components”), you agree to the following terms and represent and warrant that you are a Looker customer or trial customer:
+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:
 
-Use of the Components is restricted to Looker customers and trial customers and is provided to you under the terms of your governing document with Looker (for customers, your master subscription and license agreement with Looker (the "MSA"); and for trial customers, the end user license agreement to which you agreed previously in order to access the Product (the "EULA")).  For clarity, Components may only be used with the Product.  All capitalized terms not defined herein shall have the meaning ascribed to them in either the MSA or the EULA, as applicable.
+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.