fix: add missing gradle file

Author: GregHib

.teamcity/builds/Gradle.kt

@@ -0,0 +1,29 @@
+package builds
+
+import jetbrains.buildServer.configs.kotlin.BuildType
+import jetbrains.buildServer.configs.kotlin.buildFeatures.dockerSupport
+import jetbrains.buildServer.configs.kotlin.toId
+
+class Gradle(
+    id: String,
+    name: String,
+    goals: String,
+    args: String? = null,
+    javaVersion: String = DEFAULT_JAVA_VERSION,
+    size: LinuxSize = LinuxSize.SMALL
+) :
+    BuildType({
+      this.id(id.toId())
+      this.name = name
+
+      steps {
+        runGradle(javaVersion) {
+            this.tasks = goals
+            this.jvmArgs = "$GRADLE_DEFAULT_ARGS ${args ?: ""}"
+        }
+      }
+
+      features { dockerSupport {} }
+
+      requirements { runOnLinux(size) }
+    })