HexEditor: Add ASCII to the value inspector

This is kind of redundant but probably easier to read than the ASCII
column. Also, it seems appropriate after we add other character
encodings.

Userland/Applications/HexEditor/HexEditorWidget.cpp

@@ -285,9 +285,11 @@ void HexEditorWidget::update_inspector_values(size_t position)
 
         value_inspector_model->set_parsed_value(ValueInspectorModel::ValueType::SignedByte, String::number(static_cast<i8>(unsigned_byte_value)));
         value_inspector_model->set_parsed_value(ValueInspectorModel::ValueType::UnsignedByte, String::number(unsigned_byte_value));
+        value_inspector_model->set_parsed_value(ValueInspectorModel::ValueType::ASCII, String::formatted("{:c}", static_cast<char>(unsigned_byte_value)));
     } else {
         value_inspector_model->set_parsed_value(ValueInspectorModel::ValueType::SignedByte, "");
         value_inspector_model->set_parsed_value(ValueInspectorModel::ValueType::UnsignedByte, "");
+        value_inspector_model->set_parsed_value(ValueInspectorModel::ValueType::ASCII, "");
     }
 
     if (byte_read_count >= 2) {

Userland/Applications/HexEditor/ValueInspectorModel.h

@@ -26,6 +26,7 @@ public:
         UnsignedLong,
         Float,
         Double,
+        ASCII,
         __Count
     };
 
@@ -90,6 +91,8 @@ public:
             return "Float";
         case Double:
             return "Double";
+        case ASCII:
+            return "ASCII";
         default:
             return "";
         }
@@ -112,6 +115,7 @@ public:
             switch (selected_type) {
             case SignedByte:
             case UnsignedByte:
+            case ASCII:
                 return 1;
             case SignedShort:
             case UnsignedShort: