Fix Input composable parentheses (#5)

Fixes the parentheses location for Input nodes. Parsed attributes should be added as an argument for the resulting string.

Author: timtimmahh

converter/src/main/kotlin/de/jensklingenberg/htmltocfw/converter/node/InputNode.kt

@@ -20,7 +20,7 @@ class InputNode(private val attrs: List<ComposeAttribute>, val type: String) : M
         val arguments = mutableListOf<String>()
 
         if (attrs.isNotEmpty()) {
-            str += parseAttributes(attrs)
+            arguments.add(parseAttributes(attrs))
         }
 
         if (type.isNotBlank()) {
@@ -42,4 +42,4 @@ class InputNode(private val attrs: List<ComposeAttribute>, val type: String) : M
         }
     }
 
-}
+}