Create SECURITY.md

[Hackermrj]

DO NOT CREATE A PULL REQUEST WITHOUT READING THESE INSTRUCTIONS

Instructions

Thanks for submitting a pull request. To accept your pull request we need you do a few things:

If this is your first pull request

• Sign the contributors license agreement

Ensure tests pass and code is formatted correctly

• Run local tests on the DemoDebug variant by running ./gradlew testDemoDebug
• Fix code formatting: ./gradlew --init-script gradle/init.gradle.kts spotlessApply

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We need to know what you've done and why you've done it. Include a summary of what your pull request contains, and why you have made these changes. Include links to any relevant issues which it fixes.

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NOW DELETE THIS LINE AND EVERYTHING ABOVE IT

What I have done and why

\<add your PR description here>

[dturner]

Blocked and reported.