[IR] add testdata for dumpKotlinLike

compiler/testData/ir/irText/expressions/stringTemplates.kt.txt

@@ -0,0 +1,48 @@
+fun foo(): String {
+  return ""
+}
+
+val x: Int
+  field = 42
+  get
+
+val test1: String
+  field = ""
+  get
+
+val test2: String
+  field = "abc"
+  get
+
+val test3: String
+  field = ""
+  get
+
+val test4: String
+  field = "abc"
+  get
+
+val test5: String
+  field = "
+abc
+"
+  get
+
+val test6: String
+  field = <get-test1>() + 
+" " + 
+foo()
+  get
+
+val test7: String
+  field = <get-test1>()
+  get
+
+val test8: String
+  field = foo()
+  get
+
+val test9: String
+  field = <get-x>()
+  get
+