Add threads flag to analyze action

analyze/action.yml

@@ -4,17 +4,22 @@ author: 'GitHub'
 inputs:
   check_name:
     description: The name of the check run to add text to.
+    required: false
   output:
     description: The path of the directory in which to save the SARIF results
     required: false
     default: '../results'
   upload:
     description: Upload the SARIF file
     required: false
-    default: true
+    default: "true"
   ram:
     description: Override the amount of memory in MB to be used by CodeQL. By default, almost all the memory of the machine is used.
     required: false
+  threads:
+    description: The number of threads to be used by CodeQL.
+    required: false
+    default: "1"
   token:
     default: ${{ github.token }}
   matrix: