Class-A surfacing 2/3: surface match, boundary patch and CV fairing (#1487)

Thanks @midasdf.

assets/locales/zh.json

@@ -568,8 +568,10 @@
   "cmd.surface_blend": "混合曲面",
   "cmd.surface_boundary": "边界曲面",
   "cmd.surface_extrude": "曲面拉伸",
+  "cmd.surface_fair": "曲面光顺",
   "cmd.surface_fillet": "曲面圆角",
   "cmd.surface_loft": "曲面放样",
+  "cmd.surface_match": "曲面匹配",
   "cmd.surface_offset": "偏移曲面",
   "cmd.surface_patch": "补面",
   "cmd.surface_reverse_normal": "反转法向",