Add credscan tasks to security scan pipeline (#8)

* Add security scan

* Add placeholder pipeline

* Add credscan task

* Add task id to avoid duplicated name

* Add credscan suppressions

* Add credscan suppressions

* Add credscan suppressions

* Add credscan suppressions

* Add credscan suppressions

* Add credscan suppressions

* Add dummy file

* Remove dummy file

.azure-pipelines/credscan-suppressions.json

@@ -0,0 +1,6 @@
+{
+  "tool": "Credential Scanner",
+  "suppressions": [
+
+  ]
+}

.azure-pipelines/security-scan.yaml

@@ -7,6 +7,9 @@ pool:
   vmImage: "windows-2019"
 
 steps:
-- task: PowerShell@2
+- task: ms-codeanalysis.vss-microsoft-security-code-analysis-devops.build-task-credscan.CredScan@2
+  displayName: 'Run CredScan'
+  continueOnError: true
   inputs:
-    filePath: 'Write-Host Hello'
+    toolMajorVersion: "V2"
+    suppressionsFile: .azure-pipelines\credscan-suppressions.json