[#13] Client: Use code analyzers

Signed-off-by: Pavel Gross <p.gross@yadro.com>

src/FrostFS.SDK.ClientV2/Models/Chain/ChainTarget.cs

@@ -4,7 +4,7 @@ using Frostfs.V2.Ape;
 
 namespace FrostFS.SDK.ClientV2
 {
-    public struct FrostFsChainTarget(FrostFsTargetType type, string name)
+    public struct FrostFsChainTarget(FrostFsTargetType type, string name) : IEquatable<FrostFsChainTarget>
     {
         private ChainTarget? chainTarget;
 
@@ -33,5 +33,31 @@ namespace FrostFS.SDK.ClientV2
                 _ => throw new ArgumentException("Unexpected value for TargetType", nameof(type)),
             };
         }
+
+        public override readonly bool Equals(object obj)
+        {
+            var target = (FrostFsChainTarget)obj;
+            return Equals(target);
+        }
+
+        public override readonly int GetHashCode()
+        {
+            return $"{Name}{Type}".GetHashCode();
+        }
+
+        public static bool operator ==(FrostFsChainTarget left, FrostFsChainTarget right)
+        {
+            return left.Equals(right);
+        }
+
+        public static bool operator !=(FrostFsChainTarget left, FrostFsChainTarget right)
+        {
+            return !(left == right);
+        }
+
+        public readonly bool Equals(FrostFsChainTarget other)
+        {
+            return Type == other.Type && Name.Equals(other.Name, StringComparison.Ordinal);
+        }
     }
 }

src/FrostFS.SDK.ClientV2/Models/Chain/FrostFsChain.cs

@@ -2,7 +2,7 @@
 
 namespace FrostFS.SDK.ClientV2
 {
-    public struct FrostFsChain (byte[] raw)
+    public struct FrostFsChain(byte[] raw) : System.IEquatable<FrostFsChain>
     {
         private ByteString? grpcRaw;
 
@@ -12,5 +12,31 @@ namespace FrostFS.SDK.ClientV2
         {
             return grpcRaw ??= ByteString.CopyFrom(Raw);
         }
+
+        public override readonly bool Equals(object obj)
+        {
+            var chain = (FrostFsChain)obj;
+            return Equals(chain);
+        }
+
+        public override readonly int GetHashCode()
+        {
+            return Raw.GetHashCode();
+        }
+
+        public static bool operator ==(FrostFsChain left, FrostFsChain right)
+        {
+            return left.Equals(right);
+        }
+
+        public static bool operator !=(FrostFsChain left, FrostFsChain right)
+        {
+            return !(left == right);
+        }
+
+        public readonly bool Equals(FrostFsChain other)
+        {
+            return Raw == other.Raw;
+        }
     }
 }

src/FrostFS.SDK.ClientV2/Models/Chain/FrostFsTargetType.cs

@@ -1,6 +1,6 @@
 namespace FrostFS.SDK.ClientV2
 {
-    public enum FrostFsTargetType 
+    public enum FrostFsTargetType
     {
         Undefined = 0,
         Namespace,