feat: created model structure for courses and files

src/models/Class1.cs

-namespace Models;
-
-public class Class1
-{
-
-}

src/models/Database/Course.cs

+using System.ComponentModel;
+
+namespace Models.Database;
+
+public class Course
+{
+    public string ID { get; set; }
+    public CourseInfo CourseInfo { get; set; }
+    public List<Teacher> Teachers { get; set; }
+}
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src/models/Database/CourseInfo.cs

+namespace Models.Database;
+
+public class CourseInfo
+{
+    public string ID { get; set; }
+    public string CourseName { get; set; }
+    public string SWECourseID { get; set; }
+    public string InstitutionID { get; set; }
+    public string EducationLevel { get; set; }
+    public string Subject { get; set; }
+    public List<string> Requirements { get; set; }
+    public string CourseAim { get; set; }
+    public string CourseContents { get; set; }
+    public string CourseDescription { get; set; }
+    
+    public List<ExaminationModule> ExaminationModules { get; set; }
+    
+    public List<Inode> CanvasModules { get; set; }
+    public List<Inode> CourseFiles { get; set; }
+}
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src/models/Database/ExaminationModule.cs

+namespace Models.Database;
+
+public class ExaminationModule
+{
+    public string ID { get; set; }
+    public string ExaminationType { get; set; }
+    public float value { get; set; }
+    public List<char> GradeScale { get; set; }
+}
\ No newline at end of file

src/models/Database/Inode.cs

+namespace Models.Database;
+
+public class Inode
+{
+    public string ID { get; set; }
+    public InodeType InodeType { get; set; }
+    public bool Hidden { get; set; }
+    public string Name { get; set; }
+    public Inode? Parent { get; set; }
+    public string S3Path { get; set; }
+}
+
+public enum InodeType
+{
+    DIRECTORY,
+    FILE
+}
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src/models/Database/Teacher.cs

+namespace Models.Database;
+
+public class Teacher
+{
+    public string ID { get; set; }
+    public string Name { get; set; }
+    public string Titel { get; set; }
+    public string Email { get; set; }
+    public string Phone { get; set; }
+    public string Office { get; set; }
+}
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