feat: Begins using swift argument parser and creating cli client dependency

Sources/Models/EnvVars.swift

@@ -25,6 +25,12 @@ public struct EnvVars: Codable, Equatable, Sendable {
   /// The MQTT user password.
   public var password: String?
 
+  /// Set a custom logging level.
+  public var logLevel: Logger.Level?
+
+  /// Set the mqtt broker version.
+  public var version: String?
+
   /// Create a new ``EnvVars``
   ///
   /// - Parameters:
@@ -38,9 +44,11 @@ public struct EnvVars: Codable, Equatable, Sendable {
     appEnv: AppEnv = .development,
     host: String = "127.0.0.1",
     port: String? = "1883",
-    identifier: String = "dewPoint-controller",
+    identifier: String = "dewpoint-controller",
     userName: String? = "mqtt_user",
-    password: String? = "secret!"
+    password: String? = "secret!",
+    logLevel: Logger.Level? = nil,
+    version: String? = nil
   ) {
     self.appEnv = appEnv
     self.host = host
@@ -48,6 +56,8 @@ public struct EnvVars: Codable, Equatable, Sendable {
     self.identifier = identifier
     self.userName = userName
     self.password = password
+    self.logLevel = logLevel
+    self.version = version
   }
 
   /// Custom coding keys.
@@ -58,6 +68,8 @@ public struct EnvVars: Codable, Equatable, Sendable {
     case identifier = "MQTT_IDENTIFIER"
     case userName = "MQTT_USERNAME"
     case password = "MQTT_PASSWORD"
+    case logLevel = "LOG_LEVEL"
+    case version = "MQTT_VERSION"
   }
 
   /// Represents the different app environments.