feat: Manage not authenticated users

[taorepoara]

About this PR

Closes #539

Technical highlight/advice

I made a channel test case that made me create many files...

How to test my changes

• Create an app with routes available for guest users (see https://github.com/lenra-io/api/issues/15)
• Start it (with JSON view since Lenra view need a client adaptation)

Checklist

• [ ] I didn't over-scope my PR
• [x] My PR title matches the commit convention
• [x] I did not include breaking changes
• [x] I made my own code-review before requesting one

I included unit tests that cover my changes

• [ ] 👍 yes
• [ ] 🙅 no, because they aren't needed
• [x] 🙋 no, because I need help

I added/updated the documentation about my changes

• [ ] 📜 README.md
• [ ] 📕 docs/*.md
• [ ] 📓 docs.lenra.io
• [x] 🙅 no documentation needed

[taorepoara]

@jonas-martinez Can you look if you can fix the unit tests ?

[jonas-martinez]

@taorepoara The unit tests are working. Maybe you wanted to fix the CI instead ? I'm working on it.

[taorepoara]

:tada: This PR is included in version 1.4.0 :tada:

The release is available on:

• GitHub release
• v1.4.0

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