Add basic protobuf message parsing

src/app/model/proto-message.model.ts

@@ -1,15 +1,31 @@
-export enum MessageType {
-  String,
-  Boolean,
-  Numeric,
-  List,
-  Map,
-  Object,
+export class StringMessage implements MessageConfiguration {
+  constructor(public maxLength?: number) {}
 }
 
+export class BooleanMessage implements MessageConfiguration {}
+
+export class NumericMessage implements MessageConfiguration {
+  constructor(public min?: number, public max?: number) {}
+}
+
+export class ListMessage implements MessageConfiguration {
+  constructor(readonly subConfiguration: MessageConfiguration) {}
+}
+
+export class MapMessage implements MessageConfiguration {
+  constructor(
+    readonly keyConfiguration: MessageConfiguration,
+    readonly valueConfiguration: MessageConfiguration
+  ) {}
+}
+
+export class ObjectMessage implements MessageConfiguration {}
+
+export class MessageConfiguration {}
+
 export interface ProtoMessageField {
   name: string;
-  type: MessageType;
+  configuration: MessageConfiguration;
   value: any;
 }