feat: plugin t-function-matcher should support customizing the t-function name

[KraXen72]

currently, it's hard-coded to t. Please add an entry to PluginOptions to configure the t-function, so it properly replaces it when extracting using sherlock. I have attempted to make this modification myself, however, I couldn't get the plugin to build after running pnpm install (which took 24 minutes!) Thanks!

[felixhaeberle]

I'll move this to a discussion as it's not our top priority to change the t function matcher. It would make more sense if people just aligned with the standard behavior or created a new matcher if that makes sense (e.g., complete other syntax).

If more people decide this would be helpful, we consider it again.:)