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

analysis/analysis-api/testData/symbols/symbolByFqName/nestedClass.txt

@@ -0,0 +1,24 @@
+KtFirNamedClassOrObjectSymbol:
+  annotationClassIds: []
+  annotations: []
+  classIdIfNonLocal: kotlin/collections/MutableMap.MutableEntry
+  classKind: INTERFACE
+  companionObject: null
+  isData: false
+  isExternal: false
+  isFun: false
+  isInline: false
+  isInner: false
+  modality: ABSTRACT
+  name: MutableEntry
+  origin: LIBRARY
+  superTypes: [
+    [] kotlin/collections/Map.Entry<K, V>
+  ]
+  symbolKind: MEMBER
+  typeParameters: [
+    KtFirTypeParameterSymbol(K)
+    KtFirTypeParameterSymbol(V)
+  ]
+  visibility: Public
+  deprecationStatus: null