common: Deepseek V3.2 tool call parser

[hksdpc255]

Deepseek V3.2 uses a new tool-call format like this:

<｜DSML｜function_calls>
<｜DSML｜invoke name="get_datetime">
<｜DSML｜parameter name="timezone" string="true">Asia/Shanghai</｜DSML｜parameter>
</｜DSML｜invoke>
</｜DSML｜function_calls>

<｜DSML｜function_calls>
<｜DSML｜invoke name="search">
<｜DSML｜parameter name="query" string="true">search agent benchmark 2024</｜DSML｜parameter>
<｜DSML｜parameter name="topn" string="false">10</｜DSML｜parameter>
<｜DSML｜parameter name="source" string="true">web</｜DSML｜parameter>
</｜DSML｜invoke>
<｜DSML｜invoke name="search">
<｜DSML｜parameter name="query" string="true">搜索智能体 基准测试</｜DSML｜parameter>
<｜DSML｜parameter name="topn" string="false">10</｜DSML｜parameter>
<｜DSML｜parameter name="source" string="true">web</｜DSML｜parameter>
</｜DSML｜invoke>
</｜DSML｜function_calls>

This PR introduces the tool-call parser for the new DeepSeek V3.2 model.

Since the official release does not provide a chat template, a provisional template has been added and tested only with llama.cpp. Compatibility with other inference engines is not guaranteed and may require further adjustments.

In addition, Minja polyfill detection has been slightly updated to accommodate the new template structure.

Needs PR #17376 to be merged first. Edit: merged