FIR deserializer: read nullability & add constructors

compiler/fir/resolve/testData/loadCompiledKotlin/fun/DeclaredMemberOverridesDelegated.txt

@@ -1,6 +1,8 @@
 public final class B : R|test/X|, R|test/Y| {
     public open fun foo(): R|kotlin/Unit|
 
+    public constructor(a: R|test/X|)
+
 }
 
 public abstract interface X : R|kotlin/Any| {

compiler/fir/resolve/testData/loadCompiledKotlin/fun/InfixKeyword.txt

@@ -1,4 +1,6 @@
 public final class Example : R|kotlin/Any| {
     public final infix fun test(other: R|test/Example|): R|kotlin/Unit|
 
+    public constructor()
+
 }

compiler/fir/resolve/testData/loadCompiledKotlin/fun/OperatorKeyword.txt

@@ -1,4 +1,6 @@
 public final class Example : R|kotlin/Any| {
     public final operator fun plus(other: R|test/Example|): R|kotlin/Unit|
 
+    public constructor()
+
 }

compiler/fir/resolve/testData/loadCompiledKotlin/fun/PropagateDeepSubclass.txt

@@ -6,9 +6,13 @@ public abstract interface A : R|kotlin/Any| {
 }
 
 public open class B : R|test/A| {
+    public constructor()
+
 }
 
 public final class C : R|test/B| {
     public open fun bar(): R|kotlin/Unit|
 
+    public constructor()
+
 }

compiler/fir/resolve/testData/loadCompiledKotlin/fun/PropagateSubclassOfComparable.txt

@@ -1,4 +1,6 @@
 public final class PropagateSubclassOfComparable : R|kotlin/Comparable<test/PropagateSubclassOfComparable>| {
     public open operator fun compareTo(other: R|test/PropagateSubclassOfComparable|): R|kotlin/Int|
 
+    public constructor()
+
 }

compiler/fir/resolve/testData/loadCompiledKotlin/fun/genericWithoutTypeVariables/FunParamNullable.txt

@@ -1 +1 @@
-public final fun fff(a: R|java/lang/Integer|): R|kotlin/Int|
+public final fun fff(a: R|java/lang/Integer|?): R|kotlin/Int|

compiler/fir/resolve/testData/loadCompiledKotlin/fun/nonGeneric/ClassFun.txt

@@ -1,4 +1,6 @@
 public final class River : R|kotlin/Any| {
     public final fun song(): R|kotlin/Int|
 
+    public constructor()
+
 }

compiler/fir/resolve/testData/loadCompiledKotlin/fun/nonGeneric/ClassFunGetFoo.txt

@@ -1,4 +1,6 @@
 public final class ClassFunGetFoo : R|kotlin/Any| {
     public final fun getFoo(): R|kotlin/Int|
 
+    public constructor()
+
 }

compiler/fir/resolve/testData/loadCompiledKotlin/fun/nonGeneric/ClassFunGetFooSetFoo.txt

@@ -3,4 +3,6 @@ public final class ClassFunGetFoo : R|kotlin/Any| {
 
     public final fun setFoo(p: R|kotlin/Int|): R|kotlin/Unit|
 
+    public constructor()
+
 }

compiler/fir/resolve/testData/loadCompiledKotlin/fun/nonGeneric/ClassFunSetFoo.txt

@@ -1,4 +1,6 @@
 public final class ClassFunGetFoo : R|kotlin/Any| {
     public final fun set(p: R|kotlin/Int|): R|kotlin/Unit|
 
+    public constructor()
+
 }

compiler/fir/resolve/testData/loadCompiledKotlin/fun/nonGeneric/ExtFun.txt

@@ -1,2 +1 @@
 public final fun R|kotlin/Int|.shuffle(): R|kotlin/Int|
-

compiler/fir/resolve/testData/loadCompiledKotlin/fun/nonGeneric/ExtFunInClass.txt

@@ -1,4 +1,6 @@
 public final class ExtFunInClass : R|kotlin/Any| {
     public final fun R|kotlin/Int|.shuffle(): R|kotlin/Int|
 
+    public constructor()
+
 }

compiler/fir/resolve/testData/loadCompiledKotlin/fun/nonGeneric/ModifierAbstract.txt

@@ -1,4 +1,6 @@
 public abstract class ModifierAbstract : R|kotlin/Any| {
     public abstract fun abs(): R|kotlin/Int|
 
+    public constructor()
+
 }

compiler/fir/resolve/testData/loadCompiledKotlin/fun/nonGeneric/ModifierOpen.txt

@@ -1,4 +1,6 @@
 public open class ModifierOpen : R|kotlin/Any| {
     public open fun abs(): R|kotlin/Int|
 
+    public constructor()
+
 }

compiler/fir/resolve/testData/loadCompiledKotlin/fun/nonGeneric/ReturnTypeNullable.txt

@@ -1 +1 @@
-public final fun ff(): R|java/lang/Integer|
+public final fun ff(): R|java/lang/Integer|?

compiler/fir/resolve/testData/loadCompiledKotlin/fun/vararg/VarargInt.txt

@@ -1,4 +1,6 @@
 public open class VarargInt : R|kotlin/Any| {
     public open fun vararg(vararg p0: R|kotlin/IntArray|): R|kotlin/Unit|
 
+    public constructor()
+
 }

compiler/fir/resolve/testData/loadCompiledKotlin/fun/vararg/VarargString.txt

@@ -1,4 +1,6 @@
 public open class VarargString : R|kotlin/Any| {
     public open fun vararg(vararg p0: R|kotlin/Array<out kotlin/String>|): R|kotlin/Unit|
 
+    public constructor()
+
 }