Release v3.30.1 documentation

[TheThingsBot]

Summary

Release v3.30.1 documentation.

Automatic Changes

• Added documentation for v3.30.1.

Manual Changes

• [x] Update the 'featured' section in 'doc/content/whats-new/v3.30.1.md' with only selected items that should be featured.
• [x] If the are build errors due to missing message definitions, manually add the new and definitions where necessary.

Checklist for Reviewers

• [ ] A new section has been created in 'whats-new' with the corresponding CHANGELOG from TheThingsIndustries/lorawan-stack. The title is the release version and the date is the release date.
• [ ] The latest UPGRADING.md from the lorawan-stack-aws has been copied to /the-things-stack/host/aws/ecs/changelog
• [ ] The documentation version is up to date with the latest PATCH (3.${minor}.${patch}). No "v" is prefixed.
• [ ] The TTI and TTN API documentation has been generated and updated in doc/data/api. This includes the following files:

doc/data/api/tti.lorawan.v3/messages.yml
doc/data/api/tti.lorawan.v3/services.yml
doc/data/api/tti.lorawan.v3/enums.yml
doc/data/api/ttn.lorawan.v3/messages.yml
doc/data/api/ttn.lorawan.v3/services.yml
doc/data/api/ttn.lorawan.v3/enums.yml

• [ ] The TTI CLI documentation has been generated and updated in doc/data. This includes the following files:

doc/data/commands/ttn-lw-cli.json
doc/content/ttn-lw-cli/*.md

• [ ] All generated documentation matches the version that is being released.