feat(core): implement missing write and read methods

This commit adds implementations for readAllProperties,
readMultipleProperties, and writeMultipleProperties.
This implementation is currently based on node-wot and
will probably not be the way this is going to be handled
in the future where a Thing should indicate itself which
properties are being able to read or written to.

lib/src/binding_coap/coap_client.dart

@@ -341,8 +341,11 @@ CoapRequestMethod _requestMethodFromOperationType(OperationType operationType) {
   // TODO(JKRhb): Handle observe/subscribe case
   switch (operationType) {
     case OperationType.readproperty:
+    case OperationType.readmultipleproperties:
+    case OperationType.readallproperties:
       return CoapRequestMethod.get;
     case OperationType.writeproperty:
+    case OperationType.writemultipleproperties:
       return CoapRequestMethod.put;
     case OperationType.invokeaction:
       return CoapRequestMethod.post;

lib/src/binding_http/http_client.dart

@@ -169,8 +169,11 @@ HttpRequestMethod _requestMethodFromOperationType(OperationType operationType) {
   // TODO(JKRhb): Handle observe/subscribe case
   switch (operationType) {
     case OperationType.readproperty:
+    case OperationType.readmultipleproperties:
+    case OperationType.readallproperties:
       return HttpRequestMethod.get;
     case OperationType.writeproperty:
+    case OperationType.writemultipleproperties:
       return HttpRequestMethod.put;
     case OperationType.invokeaction:
       return HttpRequestMethod.post;

lib/src/core/consumed_thing.dart

@@ -309,15 +309,15 @@ class ConsumedThing implements scripting_api.ConsumedThing {
 
   @override
   Future<PropertyReadMap> readAllProperties([InteractionOptions? options]) {
-    // TODO(JKRhb): implement readAllProperties
-    throw UnimplementedError();
+    final propertyNames = thingDescription.properties.keys.toList();
+
+    return _readProperties(propertyNames, options);
   }
 
   @override
   Future<PropertyReadMap> readMultipleProperties(List<String> propertyNames,
       [InteractionOptions? options]) {
-    // TODO(JKRhb): implement readMultipleProperties
-    throw UnimplementedError();
+    return _readProperties(propertyNames, options);
   }
 
   @override

lib/src/core/operation_type.dart

@@ -27,6 +27,15 @@ enum OperationType {
   /// Corresponds with the `unobserveproperty` operation type.
   unobserveproperty,
 
+  /// Corresponds with the `readmultipleproperties` operation type.
+  readmultipleproperties,
+
+  /// Corresponds with the `readallproperties` operation type.
+  readallproperties,
+
+  /// Corresponds with the `writemultipleproperties` operation type.
+  writemultipleproperties,
+
   /// Corresponds with the `invokeaction` operation type.
   invokeaction,