Implement accosted

Has two meanings: (from Parkers)

Accosted

Accosted, (fr. accosté): 1. a term used when [charges](http://localhost/reference/parker/c/charge.html) are placed on each side of another charge, as, a pale accosted by six mullets; though English heralds would generally say, between six mullets pallet-wise. 2. Applied to two beasts walking or running side by side. Unless they are accosted passant counter-passant the more distant should be a little in advance of the other.

首先定位处理纹章图案和并排兽类的 PHP 代码，然后查看类似术语如何生成 SVG 盾牌图像。实现对 issue 中描述的两种含义的支持，包括 counter-passant 情况，并验证具有代表性的 blazons 是否按照预期的布局 render。

由索引模型根据 Issue 内容生成。