[FIR JS] Prepare the test data for FIR

compiler/testData/diagnostics/testsWithJsStdLib/qualifier/jsQualifierNonExternal.fir.kt

@@ -0,0 +1,9 @@
+@file:JsQualifier("a.b")
+
+class A {
+    class B
+
+    fun bar() {}
+}
+
+fun foo() = "OK"

compiler/testData/diagnostics/testsWithJsStdLib/qualifier/wrongQualifier.fir.kt

@@ -0,0 +1,17 @@
+// FILE: a.kt
+@file:JsQualifier("")
+
+// FILE: b.kt
+@file:JsQualifier("a..b")
+
+// FILE: c.kt
+@file:JsQualifier("a.")
+
+// FILE: d.kt
+@file:JsQualifier(".a")
+
+// FILE: e.kt
+@file:JsQualifier("%^&")
+
+// FILE: f.kt
+@file:JsQualifier("a.bc.d23._$")