Support regulariser with multi model particle filter

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 90.47619% with 6 lines in your changes are missing coverage. Please review.

Project coverage is 93.55%. Comparing base (8c8f9ee) to head (068adf6).

Files	Patch %	Lines
stonesoup/updater/particle.py	85.71%	2 Missing and 2 partials :warning:
stonesoup/regulariser/particle.py	94.28%	1 Missing and 1 partial :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #979 +/- ## ======================================= Coverage 93.54% 93.55% ======================================= Files 202 202 Lines 12930 12977 +47 Branches 2640 2651 +11 ======================================= + Hits 12096 12140 +44 Misses 590 590 - Partials 244 247 +3 ``` | [Flag](https://app.codecov.io/gh/dstl/Stone-Soup/pull/979/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dstl) | Coverage Δ | | |---|---|---| | [integration](https://app.codecov.io/gh/dstl/Stone-Soup/pull/979/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dstl) | `65.87% <15.87%> (-0.17%)` | :arrow_down: | | [unittests](https://app.codecov.io/gh/dstl/Stone-Soup/pull/979/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dstl) | `89.19% <90.47%> (-0.02%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dstl#carryforward-flags-in-the-pull-request-comment) to find out more.

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.