[Routing] Data Object Routes

[aarongerig]

Q	A
Bug fix?	no
New feature?	yes
BC breaks?	no
Deprecations?	no
Fixed tickets	#163

This PR adds data object routes (Pimcore UrlSlugs) to the toolchain. It automatically generates alternate routes without the user's need to intervene.

@solverat I've opened the PR as draft, as I'm not quite sure if that's everything that needs to be done in order to cover the complete functionality the other route types already have. I'm glad if you could review and provide some feedback! I'll add documentation after the coding has been done... 😉

[github-actions[bot]]

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[aarongerig]

I have read the CLA Document and I hereby sign the CLA

[aarongerig]

@solverat Got any feedback on this for me? :)

[solverat]

@aarongerig Finaly i have some time to test it!

First things first: Thanks for your efforts! :muscle:

[solverat]

@aarongerig, todo:

• add note to upgrade.md (New Feature for 5.2.0)
• rebase to latest
• add documentation (new document in section "Route and Alternate Links Generation")

[aarongerig]

@solverat Something weird happened during rebasing. I double checked the changes since my initial commit, which are applied correctly to my code base.

I added documentation as well as the addition to the upgrade notes.

Hope it's fine to merge like that – otherwise let me know!