feat: add Student class with required and optional fields

lab2/student.rb

@@ -0,0 +1,14 @@
+class Student
+    attr_accessor :id, :surname, :name, :patronymic, :phone, :telegram, :email, :git
+  
+    def initialize(surname:, name:, patronymic:, id: nil, phone: nil, telegram: nil, email: nil, git: nil)
+      @surname = surname
+      @name = name
+      @patronymic = patronymic
+      @id = id
+      @phone = phone
+      @telegram = telegram
+      @email = email
+      @git = git
+    end
+  end