Add service for handling HTTP requests for Blazor components

[hoeyi]

Description

Add service class responsible for managing HTTP requests for Blazor pages. Create an interface representing the following methods:

• GET: Retrieve the resource matching the identifier.
• DELETE: Remove the resource matching the identifier.
• POST: Insert the given resource.
• PUT: Update the resource matching the given id with the given resource representation.
• INIT: Initializes a new instance of the service resource type.