Add "Letter-like character" Omega for Unicode x2126

Fixes https://gitlab.com/kicad/code/kicad/issues/12531

common/newstroke_font.cpp

@@ -8635,7 +8635,7 @@ const char* const newstroke_font[] =
     "F^K[KFYFY[K[",
     "F^K[KFYFY[K[",
     "F^K[KFYFY[K[",
-    /* // Letterlike Symbols (2100-214F) */
+    /* // Letterlike Symbols (2100-2125) */
     "F^K[KFYFY[K[", /* U+2100 */
     "F^K[KFYFY[K[",
     "F^K[KFYFY[K[",
@@ -8674,7 +8674,8 @@ const char* const newstroke_font[] =
     "F^K[KFYFY[K[",
     "F^K[KFYFY[K[",
     "F^K[KFYFY[K[",
-    "F^K[KFYFY[K[",
+    "F^J[O[OWMVKTJQJLKIMGPFTFWGYIZLZQYTWVUWU[Z[",
+    /* // Letterlike Symbols (2127-214F) */
     "F^K[KFYFY[K[",
     "F^K[KFYFY[K[",
     "F^K[KFYFY[K[",

tools/newstroke/charlist.txt

@@ -2128,8 +2128,13 @@ skipcodes 26 0
 // Combining Diacritical Marks For Symbols (20D0-20FF)
 skipcodes 48 0
 
-// Letterlike Symbols (2100-214F)
-skipcodes 80 0
+// Letterlike Symbols (2100-2125)
+skipcodes 38 0
+
++ OMEGA_CAP
+
+// Letterlike Symbols (2127-214F)
+skipcodes 41 0
 
 // Number Forms (2150-218F)
 skipcodes 64 0