update issue template: bug report

Author: andrewconnell

.github/ISSUE_TEMPLATE/bug-report.yml

@@ -55,3 +55,37 @@ body:
       - Windows
       - macOS
       - Linux
+
+- type: checkboxes
+  attributes:
+    label: What browser(s) / client(s) have you tested
+    description: |
+      Select the browser(s)/clients this submission is relevant to.
+
+      **NOTE**:💥 If you select an item with this icon, you must include the version number of the selection in the **Additional environment details** section below.
+    options:
+      - label: 💥 Internet Explorer
+      - label: 💥 Microsoft Edge
+      - label: 💥 Google Chrome
+      - label: 💥 FireFox
+      - label: 💥 Safari
+      - label: mobile (iOS/iPadOS)
+      - label: mobile (Android)
+      - label: not applicable
+      - label: other (enter in the "Additional environment details" area below)
+
+- type: textarea
+  attributes:
+    label: Additional environment details
+    description: Include as much detail about the environment you're targetting. This is required if "other (enter below)" is selected in the previous field.
+
+- type: markdown
+  attributes:
+    value: |
+      Provide a clear & concise description of what the bug is. Please follow our guidance on [How To Create Good Issues](https://github.com/sharepoint/sp-dev-docs/wiki/How-to-Create-Good-Issues) which explains how to apply formatting, adding references & resources, screenshots, etc. **Do not attach ZIP files** of your code or compiled projects - instead, please publish your code to a public GitHub repo & post a link to it.
+
+- type: textarea
+  attributes:
+    label: Describe the bug / error
+  validations:
+    required: true