Introduce "Function with = { ... }" inspection

#KT-17119 Fixed

idea/testData/quickfix/functionWithLambdaExpressionBody/removeBraces/functionHasComment.kt

@@ -0,0 +1,11 @@
+// "Remove braces" "false"
+// TOOL: org.jetbrains.kotlin.idea.inspections.FunctionWithLambdaExpressionBodyInspection
+// ACTION: Convert to block body
+// ACTION: Convert to run { ... }
+// ACTION: Specify explicit lambda signature
+// ACTION: Specify explicit lambda signature
+// ACTION: Specify return type explicitly
+fun test(a: Int, b: Int) = <caret>{
+    // comment
+    ""
+}

idea/testData/quickfix/functionWithLambdaExpressionBody/removeBraces/functionHasMultiStatements.kt

@@ -0,0 +1,13 @@
+// "Remove braces" "false"
+// TOOL: org.jetbrains.kotlin.idea.inspections.FunctionWithLambdaExpressionBodyInspection
+// ACTION: Convert to block body
+// ACTION: Convert to run { ... }
+// ACTION: Specify explicit lambda signature
+// ACTION: Specify explicit lambda signature
+// ACTION: Specify return type explicitly
+fun test(a: Int, b: Int) = <caret>{
+    foo()
+    foo()
+}
+
+fun foo() {}

idea/testData/quickfix/functionWithLambdaExpressionBody/removeBraces/functionHasNoStatement.kt

@@ -0,0 +1,8 @@
+// "Remove braces" "false"
+// TOOL: org.jetbrains.kotlin.idea.inspections.FunctionWithLambdaExpressionBodyInspection
+// ACTION: Convert to block body
+// ACTION: Convert to run { ... }
+// ACTION: Specify explicit lambda signature
+// ACTION: Specify explicit lambda signature
+// ACTION: Specify return type explicitly
+fun test(a: Int, b: Int) = <caret>{}

idea/testData/quickfix/functionWithLambdaExpressionBody/removeBraces/funtionIsUsed.kt

@@ -0,0 +1,9 @@
+// "Remove braces" "false"
+// TOOL: org.jetbrains.kotlin.idea.inspections.FunctionWithLambdaExpressionBodyInspection
+// ACTION: Convert to block body
+// ACTION: Specify explicit lambda signature
+// ACTION: Specify explicit lambda signature
+// ACTION: Specify return type explicitly
+fun test(a: Int, b: Int) = <caret>{ a + b }
+
+val foo = test(1, 2)()

idea/testData/quickfix/functionWithLambdaExpressionBody/removeBraces/getterHasComment.kt

@@ -0,0 +1,13 @@
+// "Remove braces" "false"
+// TOOL: org.jetbrains.kotlin.idea.inspections.FunctionWithLambdaExpressionBodyInspection
+// ACTION: Convert property getter to initializer
+// ACTION: Convert to block body
+// ACTION: Convert to run { ... }
+// ACTION: Specify explicit lambda signature
+// ACTION: Specify explicit lambda signature
+// ACTION: Specify type explicitly
+// ACTION: Specify type explicitly
+val test get() = <caret>{
+    // comment
+    ""
+}

idea/testData/quickfix/functionWithLambdaExpressionBody/removeBraces/getterHasMultiStatements.kt

@@ -0,0 +1,15 @@
+// "Remove braces" "false"
+// TOOL: org.jetbrains.kotlin.idea.inspections.FunctionWithLambdaExpressionBodyInspection
+// ACTION: Convert property getter to initializer
+// ACTION: Convert to block body
+// ACTION: Convert to run { ... }
+// ACTION: Specify explicit lambda signature
+// ACTION: Specify explicit lambda signature
+// ACTION: Specify type explicitly
+// ACTION: Specify type explicitly
+val test get() = <caret>{
+    foo()
+    foo()
+}
+
+fun foo() {}

idea/testData/quickfix/functionWithLambdaExpressionBody/removeBraces/getterHasNoStatement.kt

@@ -0,0 +1,10 @@
+// "Remove braces" "false"
+// TOOL: org.jetbrains.kotlin.idea.inspections.FunctionWithLambdaExpressionBodyInspection
+// ACTION: Convert property getter to initializer
+// ACTION: Convert to block body
+// ACTION: Convert to run { ... }
+// ACTION: Specify explicit lambda signature
+// ACTION: Specify explicit lambda signature
+// ACTION: Specify type explicitly
+// ACTION: Specify type explicitly
+val test get() = <caret>{}

idea/testData/quickfix/functionWithLambdaExpressionBody/removeBraces/getterIsUsed.kt

@@ -0,0 +1,13 @@
+// "Remove braces" "false"
+// TOOL: org.jetbrains.kotlin.idea.inspections.FunctionWithLambdaExpressionBodyInspection
+// ACTION: Convert property getter to initializer
+// ACTION: Convert to block body
+// ACTION: Specify explicit lambda signature
+// ACTION: Specify explicit lambda signature
+// ACTION: Specify type explicitly
+// ACTION: Specify type explicitly
+val test get() = <caret>{ "" }
+
+fun foo() {
+    test()
+}