fix(rom): extend 7-segment alphabet

Add "c", "a", "d" and "s", "k", "y" to the 7-segment encoding dictionary, make "H" and "I" uppercase (so IHP is rendered uppercase and not lowercase)

rom.py

@@ -33,16 +33,19 @@ segment_font = {
     "D": 0b01011110,
     "E": 0b01111001,
     "F": 0b01110001,
-    "f": 0b01110001,
-    "h": 0b01110100,
-    "i": 0b00010000,
-    "o": 0b01011100,
-    "p": 0b01110011,
-    "t": 0b01111000,
     "a": 0b01110111,
     "b": 0b01111100,
     "c": 0b01011000,
     "d": 0b01011110,
+    "f": 0b01110001,
+    "h": 0b01110110,  # Actually uppercase H
+    "i": 0b00110000,  # Actually uppercase I
+    "k": 0b01110101,
+    "o": 0b01011100,
+    "p": 0b01110011,
+    "s": 0b01101101,
+    "t": 0b01111000,
+    "y": 0b01101110,
 }