Add test checking file annotations resolution

#KT-37219 Fixed

idea/testData/resolve/resolveModeComparison/FileAnnotations.after

@@ -0,0 +1,14 @@
+// COMPILER_ARGUMENTS: -Xopt-in=kotlin.RequiresOptIn
+@file:/*All (1)*/OptIn/*(1)*/(/*All (2)*/Experimental/*(2)*/::class)
+
+/*All (3)*/@/*All (4)*/Retention/*(4)*/(/*None (5)*/value/*(5)*/ = /*None (6)*/AnnotationRetention/*(6)*/./*None (7)*/BINARY/*(7)*/)
+@/*All (8)*/RequiresOptIn/*(8)*/(/*All (9)*/level/*(9)*/ = /*All (10)*/RequiresOptIn/*(10)*/./*All (11)*/Level/*(11)*/./*All (12)*/WARNING/*(12)*/)
+annotation class Experimental/*(3)*/
+
+/*All (13)*/object MyObject/*(13)*/
+
+/*All (14)*/@/*All (15)*/Experimental/*(15)*/
+operator fun /*All (16)*/MyObject/*(16)*/.invoke(/*All (17)*/closure: () -> /*All (18)*/Unit/*(18)*//*(17)*/) {}/*(14)*/
+
+/*All (19)*/fun d() = /*All (20)*//*All (21)*/MyObject/*(21)*/ {
+}/*(20)*//*(19)*/