feat: support prepend text to variable names

action.yml

@@ -8,6 +8,10 @@ inputs:
   value:
     description: "Value to slugify"
     required: false
+  prefix:
+    description: "Value to prepend to each generated variable"
+    default: ""
+    required: false
 branding:
   icon: "crop"
   color: "gray-dark"
@@ -19,3 +23,4 @@ runs:
       env:
         INPUT_KEY: ${{ inputs.key }}
         INPUT_VALUE: ${{ inputs.value }}
+        INPUT_PREFIX: ${{ inputs.prefix }}