Add support for Property and Method attributes (#49)

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* P en E

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tests/ProxyInterfaceSourceGeneratorTests/Source/Person.cs

@@ -1,4 +1,5 @@
 using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
 using System.Diagnostics.CodeAnalysis;
 using System.Threading;
 using System.Threading.Tasks;
@@ -9,6 +10,7 @@ namespace ProxyInterfaceSourceGeneratorTests.Source
     {
         private readonly MyStruct[] _arr = new MyStruct[1];
 
+        [Display(Prompt = "MyStruct Indexer")]
         public MyStruct this[int i]
         {
             get { return _arr[i]; }
@@ -26,6 +28,7 @@ namespace ProxyInterfaceSourceGeneratorTests.Source
             return new List<Human> { h, new Human { IsAlive = true } };
         }
 
+        [Display(ResourceType = typeof(PeriodicTimer))]
         public string Name { get; set; }
 
         public string? StringNullable { get; set; }
@@ -99,6 +102,7 @@ namespace ProxyInterfaceSourceGeneratorTests.Source
             return Task.FromResult(1);
         }
 
+        [Display(Name = "M3")]
         public Task<string?> Method3Async()
         {
             return Task.FromResult((string?)"");

tests/ProxyInterfaceSourceGeneratorTests/Source/PersonExtends.cs

@@ -1,6 +1,3 @@
-using System.Collections.Generic;
-using System.Threading.Tasks;
-
 namespace ProxyInterfaceSourceGeneratorTests.Source
 {
     public class PersonExtends : Human
@@ -12,13 +9,13 @@ namespace ProxyInterfaceSourceGeneratorTests.Source
 
         public static string StaticString { get; set; } = "500";
 
-        public string Name { get; set; }
+        public string Name { get; set; } = null!;
 
         public string? StringNullable { get; set; }
 
         public long? NullableLong { get; }
 
-        public object @object { get; set; }
+        public object @object { get; set; } = null!;
 
         public void Void()
         {