Improve the NoMixedIndentation rule to explicitly support apexdoc in projects that use tabs

[sirephil]

Every character counts towards Apex code size limits so it is common for projects to adopt a tab-based indentation approach (saving on all those space characters). However, in such projects, we get a lot of very annoying highlights against apexdoc, like the following:

Here the apexdoc is structured as:

<tab>/**
<tab><space>* A mocked...
<tab><space>*/

This keeps the apexdoc block visually pleasing but means we have a mix of tabs and spaces.

My suggestion is to improve the regex used in this rule to suppress the warning when there is just one space following the tabs and that space is followed by an asterisk.

[johnbelosf]

hi @sirephil thank you for getting in touch. Code Analyzer runs a number of open-source engines for many of our rules that we don't directly own, such as PMD in this instance. If you raise your request with the PMD team directly, it will contribute Code Analyzer users as well as those that use PMD directly: https://github.com/pmd/pmd

[sirephil]

OK. I raised it here.