Add enums for role (employee), category and genre.

src/main/java/demo/codeexample/enums/Category.java

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+package demo.codeexample.enums;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+public enum Category {
+    FILM("Film"),
+    SERIES("Series");
+
+    private final String displayName;
+
+    @Override
+    public String toString(){
+        return displayName;
+    }
+}

src/main/java/demo/codeexample/enums/Genre.java

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+package demo.codeexample.enums;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+public enum Genre {
+    ACTION("Action"),
+    COMEDY("Comedy"),
+    CRIMINAL("Criminal"),
+    DRAMA("Drama"),
+    FANTASY("Fantasy"),
+    HORROR("Horror"),
+    ROMANCE("Romance"),
+    SCI_FI("Sci-Fi");
+
+    private final String displayName;
+
+    @Override
+    public String toString(){
+        return displayName;
+    }
+}

src/main/java/demo/codeexample/enums/Role.java

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+package demo.codeexample.enums;
+
+public enum Role {
+    PRODUCER,
+    DIRECTOR,
+    RECRUITER,
+    EDITOR
+}