Add slovak translation

src/main/resources/assets/squaredadditions/lang/sk_sk.json

@@ -0,0 +1,19 @@
+{
+    "_comment0": "Note to translators: DO NOT COPY ENTRIES FROM ENGLISH",
+    "_comment1": "I repeat: do NOT copy entries from English!!",
+    "_comment2": "Copying English entries will cause them to become outdated when this file changes",
+    "_comment3": "Untranslated entries will automatically be inherited from this file.",
+    "_comment4": "Once again, don't copy from English, and THANK YOU for your hard work!",
+    "_comment5": "Poznámka pre prekladateľov: NEKOPÍRUJTE ENTITLEMENTY Z ANGLIČTINY",
+
+    "item.squaredadditions.copper_sword": "Medený meč",
+    "item.squaredadditions.copper_shovel": "Medená lopata",
+    "item.squaredadditions.copper_hoe": "Medená motyka",
+    "item.squaredadditions.copper_axe": "Medená sekera",
+    "item.squaredadditions.copper_pickaxe": "Medený krompáč",
+    "item.squaredadditions.emerald_sword": "Smaragdový meč",
+    "item.squaredadditions.emerald_shovel": "Smaragdová lopata",
+    "item.squaredadditions.emerald_hoe": "Smaragdová motyka",
+    "item.squaredadditions.emerald_axe": "Smaragdová sekera",
+    "item.squaredadditions.emerald_pickaxe": "Smaragdový krompáč"
+}