Universe 2022: Add local workshop setup instructions

Author: adityasharad

workshop-2022/README.md

@@ -1,2 +1,47 @@
 # CodeQL workshop for Ruby: Finding open URL redirection vulnerabilities
 
+<h5 align="center">@adityasharad and @rvermeulen</h5>
+
+If you are attending this workshop at GitHub Universe, please follow the instructions below to prepare for the workshop in advance.
+
+Closer to the workshop date, the detailed workshop steps will be available below, which the facilitators will guide you through.
+
+## Contents
+
+- Prerequisites and setup instructions
+  - [On your local machine](#setup)
+  - [On Codespaces](#setup-codespaces)
+- [Workshop](#workshop)
+
+## Prerequisites and setup instructions (on your local machine) <a id="setup"></a>
+
+Please complete this section before the workshop, if possible.
+
+- Install [Visual Studio Code](https://code.visualstudio.com/).
+- Install the [CodeQL extension for Visual Studio Code](https://codeql.github.com/docs/codeql-for-visual-studio-code/setting-up-codeql-in-visual-studio-code/).
+- You do _not_ need to install the CodeQL CLI: the extension will handle this for you.
+- Clone this repository:
+  ```
+  git clone https://github.com/githubuniverseworkshops/codeql
+  ```
+  - Use `git pull origin main` to regularly keep this clone up to date with the latest state of the repository.
+- Open the repository in Visual Studio Code: **File** > **Open** (or **Open Folder**) > Browse to the checkout of `githubuniverseworkshops/codeql`.
+- Import the [CodeQL database](https://github.com/githubuniverseworkshops/codeql/releases/download/universe-2022/codeql-ruby-workshop-opf-openproject.zip) to be used in the workshop:
+  - Click the **CodeQL** rectangular icon in the left sidebar.
+  - Place your mouse over **Databases**, and click the cloud-shaped icon labelled `Download Database`.
+  - Copy and paste this URL into the box, then press **OK**/**Enter**: https://github.com/githubuniverseworkshops/codeql/releases/download/universe-2022/codeql-ruby-workshop-opf-openproject.zip
+  - The CodeQL extension will download the CodeQL CLI and the chosen database.
+  - After the database is downloaded, it will appear in the left sidebar under **Databases**. Click on the database name, and click **Set Current Database**.
+- Run a test CodeQL query:
+  - Open the file [`workshop-2022/example.ql`](/workshop-2022/example.ql).
+  - From the Command Palette (`Cmd/Ctrl+Shift+P`) or the right-click context menu, click the command `CodeQL: Run Query`.
+  - After the query compiles and runs, you should see the results in a new `CodeQL Query Results` tab.
+- Create a new file in the `workshop-2022` directory called `UrlRedirect.ql`. You'll develop this query during the workshop.
+
+## Prerequisites and setup instructions (on Codespaces) <a id="setup-codespaces"></a>
+
+Coming soon!
+
+## Workshop <a id="workshop"></a>
+
+Coming soon!