FIR IDE: move low level api testdata sources to the analysis directory

analysis/low-level-api-fir/testdata/multiModuleLazyResolve/whenWithHeiarchy/dependency/dependency.kt

@@ -0,0 +1,8 @@
+interface A
+
+interface X : A
+interface Y : A
+
+interface F : Y, X
+interface G : Y, X
+

analysis/low-level-api-fir/testdata/multiModuleLazyResolve/whenWithHeiarchy/expected.txt

@@ -0,0 +1,16 @@
+FILE: main.kt
+    public final fun R|Y|.test(): R|kotlin/String?| {
+        lval a: R|kotlin/Int| = when (this@R|/test|) {
+            ($subj$ is R|F|) ->  {
+                Int(1)
+            }
+            ($subj$ is R|G|) ->  {
+                Int(2)
+            }
+            else ->  {
+                ^test Null(null)
+            }
+        }
+
+        ^test Null(null)
+    }

analysis/low-level-api-fir/testdata/multiModuleLazyResolve/whenWithHeiarchy/main/main.kt

@@ -0,0 +1,8 @@
+fun Y.test(): String? {
+    val a = when (this) {
+        is F -> 1
+        is G -> 2
+        else -> return null
+    }
+    return null
+}

analysis/low-level-api-fir/testdata/multiModuleLazyResolve/whenWithHeiarchy/structure.json

@@ -0,0 +1,7 @@
+{
+  "modules" : [
+    { "name": "main", "dependsOn": ["dependency"] },
+    { "name": "dependency" }
+  ],
+  "fileToResolve": { "module": "main", "file": "main.kt" }
+}