feat: add config loader for keywords

src/tampy/keywords.json

@@ -0,0 +1 @@
+{}

src/tampy/keywords.py

@@ -0,0 +1,38 @@
+"""Load keyword mappings from JSON config."""
+
+import json
+from pathlib import Path
+
+
+DEFAULT_KEYWORDS = {
+    "print": "இருப்பு",
+    "if": "இணை",
+    "else": "இல்லை",
+    "for": "ஒவ்வொரு",
+    "while": "வரை",
+    "def": "வரையறை",
+    "return": "திரும்ப",
+    "import": "மேற்கோள்கள்",
+    "from": "இருந்து",
+    "as": "இவ்வாறு",
+    "class": "சாம்பியன்",
+    "try": "கோட்பாடு",
+    "except": "வெளியே",
+    "with": "உடன்",
+    "True": "சரி",
+    "False": "தவறு",
+    "None": "ஒன்றுமில்லை",
+}
+
+
+def load_keywords(config_path: Path | str) -> dict[str, str]:
+    """Load keywords from JSON file, merge with defaults."""
+    defaults = DEFAULT_KEYWORDS.copy()
+    
+    path = Path(config_path) if isinstance(config_path, str) else config_path
+    if path.exists():
+        with open(path, "r", encoding="utf-8") as f:
+            user_keywords = json.load(f)
+            defaults.update(user_keywords)
+    
+    return defaults