Add inspections and quickfixes of redundant Json format instantiation

Resolves KT-45075

plugins/kotlin-serialization/kotlin-serialization-ide/testData/quickfix/DefaultFormat.kt

@@ -0,0 +1,7 @@
+// "Replace with default Json format instance" "true"
+import kotlinx.serialization.*
+import kotlinx.serialization.json.*
+
+fun foo() {
+    <caret>Json {}.encodeToString(Any())
+}