Add use_non_matching_label option

[inspectredc]

Adds splat support for the spimdisasm option added in this PR Decompollaborate/spimdisasm#199

Please let me know if I need to update any sections of the documentation to accompany this change

[AngheloAlf]

You need to mention the new attribute here https://github.com/ethteck/splat/blob/main/docs/Adding-Symbols.md

You also need to bump the min spimdisasm version to 1.40.0. It is defined in a few places like pyproject.toml, requirements.txt and
https://github.com/ethteck/splat/blob/main/src/splat/disassembler/spimdisasm_disassembler.py#L10, and maybe something else I'm missing.

[inspectredc]

Have updated the relevant sections now, sorry for the delay!