Add Codeql (#89)

Author: BrennanConroy

azure-pipelines.yml

@@ -16,6 +16,8 @@ variables:
     value: true
   - name: _BuildConfig
     value: 'Debug'
+  - name: Codeql.Enabled
+    value: true
   # used for post-build phases, internal builds only
   - ${{ if and(ne(variables['System.TeamProject'], 'public'), notin(variables['Build.Reason'], 'PullRequest')) }}:
     - group: DotNet-AspNet-SDLValidation-Params