FIR IDE: move analysis api fir testdata to the analysis directory

analysis/analysis-api/testData/analysisSession/resolveCall/indexedGet.kt

@@ -0,0 +1,7 @@
+class C {
+    operator fun get(a: Int, b: String): Boolean = true
+}
+
+fun call(c: C) {
+    val res = <expr>c[1, "foo"]</expr>
+}