Added get api which is responsable for get next or pevious form

src/main/java/net/gepafin/tendermanagement/enums/FormActionEnum.java

@@ -0,0 +1,20 @@
+package net.gepafin.tendermanagement.enums;
+
+import com.fasterxml.jackson.annotation.JsonValue;
+
+public enum FormActionEnum {
+
+    NEXT("NEXT"),
+    PREVIOUS("PREVIOUS");
+
+    private String value;
+
+    FormActionEnum(String value) {
+        this.value = value;
+    }
+
+    @JsonValue
+    public String getValue() {
+        return value;
+    }
+}