Initial commit for open source

Co-authored-by: Alex Migicovsky <migi@apple.com>
Co-authored-by: Ashley Garland <acgarland@apple.com>
Co-authored-by: Daniel Strokis <dstrokis@apple.com>
Co-authored-by: David Rönnqvist <ronnqvist@apple.com>
Co-authored-by: Ethan Kusters <ekusters@apple.com>
Co-authored-by: Jack Lawrence <jackl@apple.com>
Co-authored-by: Junior Bontognali <bontojr@apple.com>
Co-authored-by: Marcus Ortiz <marcus_ortiz@apple.com>
Co-authored-by: Marin Todorov <marin@underplot.com>
Co-authored-by: Mashfique Anwar <anwar.mashfique@gmail.com>
Co-authored-by: Nate Cook <natecook@apple.com>
Co-authored-by: Sara Radi <sradi@apple.com>
Co-authored-by: TJ Usiyan <usiyan@apple.com>
Co-authored-by: Victoria Mitchell <victoria_m@apple.com>

.github/pull_request_template.md

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+Bug/issue #, if applicable: 
+
+## Summary
+
+_Provide a description of what your PR addresses, explaining the expected user experience. 
+Also, provide an overview of your implementation._
+
+## Dependencies
+
+_Describe any dependencies this PR might have, such as an associated branch in another repository._
+
+## Testing
+
+_Describe how a reviewer can test the functionality of your PR. Provide test content to test with if
+applicable._
+
+Steps:
+1. _Provide setup instructions._
+2. _Explain in detail how the functionality can be tested._
+
+## Checklist
+
+Make sure you check off the following items. If they cannot be completed, provide a reason.
+
+- [ ] Added tests
+- [ ] Ran the `./bin/test` script and it succeeded
+- [ ] Updated documentation if necessary

.gitignore

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+# This source file is part of the Swift.org open source project
+#
+# Copyright (c) 2021 Apple Inc. and the Swift project authors
+# Licensed under Apache License v2.0 with Runtime Library Exception
+#
+# See https://swift.org/LICENSE.txt for license information
+# See https://swift.org/CONTRIBUTORS.txt for Swift project authors
+
+.DS_Store
+.build
+/Packages
+*.pbxuser
+*.mode1v3
+xcuserdata
+User Interface State
+_Store
+*.xcscmblueprint
+*.db-shm
+*.db-wal
+DerivedData
+/*.xcodeproj
+docc-dist-build
+.docc-build
+.swiftpm

CODE_OF_CONDUCT.md

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+# Code of Conduct
+
+The code of conduct for this project can be found at https://swift.org/code-of-conduct.
+
+<!-- Copyright (c) 2021 Apple Inc and the Swift Project authors. All Rights Reserved. -->