Add BuildJet Option (#154)

src/utils.ts

@@ -1,3 +1,5 @@
+import * as buildjetCache from "@actions/buildjet-cache";
+import * as ghCache from "@actions/cache";
 import * as core from "@actions/core";
 import * as exec from "@actions/exec";
 
@@ -28,3 +30,17 @@ export async function getCmdOutput(
   }
   return stdout;
 }
+
+export function getCacheHandler() {
+    const cacheProvider = core.getInput("cache-provider");
+    switch (cacheProvider) {
+      case 'github':
+        core.info ("Using Github Cache.");
+        return ghCache;
+      case 'buildjet':
+        core.info ("Using Buildjet Cache.");
+        return buildjetCache;
+      default:
+        throw new Error("Only currently support github and buildjet caches");
+    }
+}