Added support for agent version

Consul.Test/AgentTest.cs

@@ -1003,6 +1003,17 @@ public async Task Agent_HostInfo()
             Assert.True(hostInfo.Response.CollectionTime > 0);
         }
 
+        [SkippableFact]
+        public async Task Agent_Version()
+        {
+            var cutOffVersion = SemanticVersion.Parse("1.16.0");
+            Skip.If(AgentVersion < cutOffVersion, $"Current version is {AgentVersion}, but `Agent_Version` is only supported from Consul {cutOffVersion}");
+
+            var agentVersion = await _client.Agent.GetAgentVersion();
+            Assert.NotNull(agentVersion.Response.HumanVersion);
+            Assert.NotNull(agentVersion.Response.SHA);
+        }
+
         [Fact]
         public async Task Agent_Metrics()
         {

Consul/Agent.cs

@@ -418,6 +418,16 @@ public class LocalServiceHealth
         public AgentCheck[] Checks { get; set; }
     }
 
+    /// <summary>
+    /// AgentVersion represents the version information for the Consul agent
+    /// </summary>
+    public class AgentVersion
+    {
+        public string SHA { get; set; }
+        public DateTime BuildDate { get; set; }
+        public string HumanVersion { get; set; }
+        public string FIPS { get; set; }
+    }
     /// <summary>
     /// Log Level Enum
     /// </summary>
@@ -1033,6 +1043,15 @@ public async Task<QueryResult<AgentHostInfo>> GetAgentHostInfo(CancellationToken
             return await _client.Get<AgentHostInfo>($"v1/agent/host").Execute(ct).ConfigureAwait(false);
         }
         /// <summary>
+        /// GetAgentVersion returns the version of the agent
+        /// </summary>
+        /// <param name="ct"></param>
+        /// <returns>Version of the agent</returns>
+        public async Task<QueryResult<AgentVersion>> GetAgentVersion(CancellationToken ct = default)
+        {
+            return await _client.Get<AgentVersion>("/v1/agent/version").Execute(ct).ConfigureAwait(false);
+        }
+        /// <summary>
         /// Log streamer
         /// </summary>
         public class LogStream : IEnumerable<Task<string>>, IDisposable

Consul/Interfaces/IAgentEndpoint.cs

@@ -63,6 +63,7 @@ public interface IAgentEndpoint
         Task<QueryResult<LocalServiceHealth>> GetLocalServiceHealthByID(string serviceID, QueryOptions q, CancellationToken ct = default);
         Task<QueryResult<LocalServiceHealth>> GetLocalServiceHealthByID(string serviceID, CancellationToken ct = default);
         Task<QueryResult<Metrics>> GetAgentMetrics(CancellationToken ct = default);
+        Task<QueryResult<AgentVersion>> GetAgentVersion(CancellationToken ct = default);
         Task<WriteResult> Reload(CancellationToken ct = default);
         [Obsolete]
         Task<WriteResult> Reload(string node, CancellationToken ct = default);