Merge pull request #37 from ServiceStack/fix-ci

CI server doesn't have GRADLE_HOME setup, easier to keep self isolated.

Author: Layoric

src/ServiceStackIDEA/gradle/wrapper/gradle-wrapper.jar

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists