Migrate function call and assignment operator parsers to Kotlin

src/main/kotlin/dsl/ast/parser/FunctionCallParser.kt

@@ -0,0 +1,16 @@
+package dsl.ast.parser
+
+import dsl.ast.model.entity.ParserOutput
+import dsl.ast.model.node.FunctionCallNode
+import dsl.token.model.entity.TokenList
+
+class FunctionCallParser : Parser() {
+    override fun tryToParse(input: TokenList): ParserOutput {
+        return allOf(listOf(
+            SimpleIdentifierParser(),
+            FunctionCallArgumentsParser()
+        )) {
+            FunctionCallNode(it[0], it[1])
+        }.parse(input)
+    }
+}