Bug 481961

I am trying to setup Kate development environment following Build It guide (https://kate-editor.org/build-it/) and it ends up with errors.

The first one was:
> Please edit your config. Replace "kdedir" with "install-dir".

This one was trivial to solve.

Then there are warnings:
```
Warning: The include line defined in /home/gitpod/.config/kdesrc-buildrc:26 uses an old path with data/build-include.
The module-definitions files are now located in repo-metadata.
The configuration file is intended to only have this include line (please manually edit your config):
    include ${module-definitions-dir}/kf6-qt6.ksb
Alternatively, you can regenerate the config with --generate-config option.
Mapping this line to "include ${module-definitions-dir}/kf6-frameworks.ksb"

Warning: The include line defined in /home/gitpod/.config/kdesrc-buildrc:27 uses an old path with data/build-include.
The module-definitions files are now located in repo-metadata.
The configuration file is intended to only have this include line (please manually edit your config):
    include ${module-definitions-dir}/kf6-qt6.ksb
Alternatively, you can regenerate the config with --generate-config option.
Mapping this line to "include ${module-definitions-dir}/kf6-applications.ksb"
```

Previously I was able to setup environment and build Kate. It seems something has changed on kdesrc-build side in the last few months.

The guide needs to be updated to be working again.

P.S. If you are interested, I've created a repo (https://github.com/i-ky/kate-development-in-gitpod) to automate the setup in Gitpod (https://www.gitpod.io) - a containerized cloud-based environment. But the errors/warnings were the same when I was setting up Kate development environment on a "regular" PC running Linux Mint.