Refactor xhgui launch command

[tyler36]

DDEV introduced a way to reduce "launch" comand boilerplate using a port. ddev/ddev#6024

This PR takes advantage of that, and reduces the laucnh down to a simple "port" implementation.

We'll need require DDEV 1.23 (?) during install.
This is considered a breaking change and will require a point release.

[tyler36]

What is the recommended way to check for DDEV version for this PR?

The add-on-template uses ddev debug capabilities

$ ddev debug capabilities
multiple-dockerfiles
interactive-project-selection
ddev-get-yaml-interpolation
config-star-yaml-merging
pre-dockerfile-insertion
user-env-var
npm-yarn-caching
exposed-ports-configuration
daemon-run-configuration
get-volume-db-version
migrate-database
web-start-hooks
add-on-versioning
multiple-upload-dirs
debian-bookworm
corepack

But I'm not sure this is a "feature". Does bash has native support for parsing a string as a version number for comparison?

[rfay]

Why not just use ddev_version_constraint in config.xhgui.yaml? That might the best.

ddev/ddev-platformsh uses the capabilities technique, https://github.com/ddev/ddev-platformsh/blob/main/install.yaml#L23

SOMEWHERE I have a bash function for comparing version.
The only one I can find right now is:

https://github.com/ddev/ddev/blob/6e82ece9e371e9e4a54bcbe4495b1aab52eb39c3/.buildkite/sanetestbot.sh#L13

[tyler36]

Seems like corepack was also introduced in 1.23 so I'm using that in the pre_install_actions.