Add: [CN] core monthly shop supply items filter (torpedo / AP shell / heavy shell)

[wanwan-doudou]

Summary

Implements the request in #5835 — support buying the core monthly shop (核心月度商店) supply items that currently have no template / filter support:

Filter token	In-game item (CN)
Type93PureOxygenTorpedo	九三式纯氧鱼雷 (彩雷)
Type1ArmorPiercingShell	一式穿甲弹 (白弹)
SuperHeavyShell	超重弹 (黑弹)

Changes

• Add 3 item templates (96×96) to assets/shop/core/, cropped from a 1280×720 CN client frame using the existing CoreShop_250814.shop_grid geometry (origin=(265, 238), delta=(169, 223), button_shape=(64, 64)), so they match the runtime crop exactly.
• Add type93pureoxygentorpedo|type1armorpiercingshell|superheavyshell to FILTER_REGEX in module/shop/base.py so these items parse into a filter group and can be recognized / selected.

Usage

Add any of Type93PureOxygenTorpedo / Type1ArmorPiercingShell / SuperHeavyShell to the Core Shop filter (> sets priority), e.g. Type93PureOxygenTorpedo > SuperHeavyShell > Type1ArmorPiercingShell.

Testing

Verified against a live CN core monthly shop screenshot using the actual shop detection code:

• The 3 templates are recognized with the correct names.
• FILTER_REGEX parses each token to its group.
• Filter selection returns the expected items in priority order.

The buy flow itself is unchanged (reuses the existing path already used by Array / Chip).

[LmeSzinc]

使用游戏内物品名称，不要自定义缩写

[wanwan-doudou]

感谢 review！已按照游戏内物品名称修改，去掉了自定义缩写：

• 九三式纯氧鱼雷 → Type93PureOxygenTorpedo
• 一式穿甲弹 → Type1ArmorPiercingShell
• 超重弹 → SuperHeavyShell

模板文件名与 FILTER_REGEX 的 token 已同步更新，麻烦再看下。