Add spell configuration

Add basic cspell configuration and dictionary to remove false spelling warnings.

.cspell/custom-dictionary.txt

@@ -0,0 +1,7 @@
+# Custom Dictionary Words
+skola
+goskola
+pubtypes
+zervo
+zervó
+zadachin

cspell.json

@@ -0,0 +1,17 @@
+{
+    "version": "0.2",
+    "ignorePaths": [],
+    "dictionaryDefinitions": [
+        {
+            "name": "custom-dictionary",
+            "path": "./.cspell/custom-dictionary.txt",
+            "addWords": true
+        }
+    ],
+    "dictionaries": [
+        "custom-dictionary"
+    ],
+    "words": [],
+    "ignoreWords": [],
+    "import": []
+}