Rework Kfont to store glyph top as offset from top of text row

src/hulk/console.d

@@ -86,7 +86,7 @@ struct Console
     private static void render_char(size_t x, size_t y, char ch)
     {
         const(CharInfo) * ci = &Kfont.chars[ch];
-        Fb.blit_alpha_bitmap(fb_x(x) + ci.left, fb_y(y) + Kfont.line_height - Kfont.baseline_offset - ci.top, ci.bitmap, ci.width, ci.height);
+        Fb.blit_alpha_bitmap(fb_x(x) + ci.left, fb_y(y) + ci.top, ci.bitmap, ci.width, ci.height);
     }
 
     /**