Update HR with 2020 change and add types

In 2020 there has been a change in Holidays in Croatia, more info at: https://en.wikipedia.org/wiki/Public_holidays_in_Croatia - Updated data to reflect that change

Additionally added the types of the holidays along with the widely observed International Women's day .

Marked the regional holidays as optional because they don't cover the entire county (just the municipal areas of Split and Dubrovnik respectively) and do not necessarily include all types of business and services as public holidays do.

data/countries/HR.yaml

@@ -11,44 +11,72 @@ holidays:
     days:
       01-01:
         _name: 01-01
+        type: public
       01-06:
         _name: 01-06
+        type: public
       easter -47:
         _name: easter -47
         type: observance
       easter:
         _name: easter
+        type: public
       easter 1:
         _name: easter 1
+        type: public
       easter 60:
         _name: easter 60
+        type: public
+      03-08:
+        _name: 05-01
+        type: observance
       05-01:
         _name: 05-01
+        type: public
+      05-30:
+        name:
+          hr: Dan državnosti
+          en: National Day
+        type: public
       2nd sunday in May:
         _name: Mothers Day
         type: observance
       06-22:
         name:
           hr: Dan antifašističke borbe
           en: Anti-Fascist Struggle Day
+        type: public
       06-25:
         name:
-          hr: Dan državnosti
-          en: Statehood Day
+          hr: Dan neovisnosti
+          en: Independence Day	
+        type: observance
       08-05:
         name:
           hr: Dan pobjede i domovinske zahvalnosti
           en: Victory and Homeland Thanksgiving Day and the Day of Croatian defenders
+        type: public
       08-15:
         _name: 08-15
+        type: public
       10-08:
-        _name: Independence Day
+        name:
+          hr: Dan Hrvatskoga sabora.
+          en: Day of the Croatian Parliament
+        type: observence
       11-01:
         _name: 11-01
+      11-18:
+        name:
+          hr: Dan sjećanja na žrtve Domovinskog rata
+          en: Remembrance Day
+        type: public
       12-25:
         _name: 12-25
+        type: public
       12-26:
         _name: 12-26
+        type: public
     regions:
       '17':
         name: Split-Dalmatia
@@ -57,10 +85,12 @@ holidays:
             name:
               hr: Sveti Duje
               en: Saint Domnius
+            type: optional
       '19':
         name: Dubrovnik-Neretva
         days:
           02-03:
             name:
               hr: Sveti Vlaho
               en: Saint Blaise
+            type: optional