feat: implement remaining G0 character sets (IT, FR, ES/PT, TR)

src/teletext/charsets.py

@@ -29,17 +29,49 @@ GERMAN = {
     0x7B: 'ä', 0x7C: 'ö', 0x7D: 'ü', 0x7E: 'ß'
 }
 
+# Italian - Option 011 (3)
+ITALIAN = {
+    0x23: '£', 0x24: '$', 0x40: 'é', 
+    0x5B: '°', 0x5C: 'ç', 0x5D: '→', 0x5E: '↑', 
+    0x5F: '#', 0x60: 'ù', 
+    0x7B: 'à', 0x7C: 'ò', 0x7D: 'è', 0x7E: 'ì'
+}
+
+# French - Option 100 (4)
+FRENCH = {
+    0x23: 'é', 0x24: 'ï', 0x40: 'à', 
+    0x5B: 'ë', 0x5C: 'ê', 0x5D: 'ù', 0x5E: 'î', 
+    0x5F: '#', 0x60: 'è', 
+    0x7B: 'â', 0x7C: 'ô', 0x7D: 'û', 0x7E: 'ç'
+}
+
+# Portuguese/Spanish - Option 101 (5)
+PORTUGUESE_SPANISH = {
+    0x23: 'Ç', 0x24: '$', 0x40: '¡', 
+    0x5B: 'á', 0x5C: 'é', 0x5D: 'í', 0x5E: 'ó', 
+    0x5F: 'ú', 0x60: '¿', 
+    0x7B: 'ü', 0x7C: 'ñ', 0x7D: 'è', 0x7E: 'à'
+}
+
+# Turkish - Option 110 (6)
+TURKISH = {
+    0x23: 'ğ', 0x24: 'Ğ', 0x40: 'İ', 
+    0x5B: 'Ş', 0x5C: 'Ö', 0x5D: 'Ç', 0x5E: 'Ü', 
+    0x5F: 'ğ', 0x60: 'ç', 
+    0x7B: 'ş', 0x7C: 'ö', 0x7D: 'ü', 0x7E: 'ı'
+}
+
 # We can add more as needed.
 
 SETS = [
     ENGLISH,            # 000
     GERMAN,             # 001
     SWEDISH_FINNISH,    # 010
-    ENGLISH, # Italian (011) - placeholder
-    ENGLISH, # French (100) - placeholder
-    ENGLISH, # Portuguese/Spanish (101) - placeholder
-    ENGLISH, # Turkish (110) - placeholder
-    ENGLISH, # Romania (111) - placeholder
+    ITALIAN,            # 011
+    FRENCH,             # 100
+    PORTUGUESE_SPANISH, # 101
+    TURKISH,            # 110
+    ENGLISH,            # 111 (Romania placeholder)
 ]
 
 def get_char(byte_val, subset_idx):