Implemented UI, fixed serialization inconsistency

Lab2/src/main/java/org/lumijiez/enums/StudyField.java

@@ -0,0 +1,26 @@
+package org.lumijiez.enums;
+
+public enum StudyField {
+    MECHANICAL_ENGINEERING("Mechanical Engineering", "ME"),
+    SOFTWARE_ENGINEERING("Software Engineering", "FAF"),
+    FOOD_TECHNOLOGY("Food Technology", "FT"),
+    URBANISM_ARCHITECTURE("Urbanism and Architecture", "UA"),
+    VETERINARY_MEDICINE("Veterinary Medicine", "VE");
+
+    private final String name;
+
+    private final String abbreviation;
+
+    StudyField(String name, String abbreviation) {
+        this.name = name;
+        this.abbreviation = abbreviation;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getAbbreviation() {
+        return abbreviation;
+    }
+}