Improve phpdoc types

[lekoala]

Description

I'd like to make the codebase easier to use with phpstan

Additional context or points of discussion

See here for more details: https://github.com/silverstripe/silverstripe-framework/issues/11149

Validations

• [X] You intend to implement the feature yourself
• [X] You have read the contributing guide
• [X] You strongly believe this feature should be in core, rather than being its own community module
• [X] You have checked for existing issues or pull requests related to this feature (and didn't find any)

PRs

• https://github.com/silverstripe/silverstripe-framework/pull/11168
• https://github.com/silverstripe/silverstripe-framework/pull/11177
• https://github.com/silverstripe/silverstripe-framework/pull/11187
• https://github.com/silverstripe/silverstripe-framework/pull/11192

[GuySartorelli]

I've merged the linked PR. @lekoala are there additional docblock types you want to update? Or should I close this issue as complete?

[lekoala]

@GuySartorelli you can leave this open, i have a few others coming up but I'm rather in a rush at the moment so that could take a few weeks

[GuySartorelli]

Since there haven't been any new PRs related to this in a while I'll close it. @lekoala if you end up raising new PRs that are related to this feel free to @ me and I'll reopen it so we can track those.