Changes to build against owntone-server release

[dhutchison]

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• I have read the contributing guideline and understand that I have made the correct modifications

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Description:

Changes paths in the build & links to refer to the new name of the project, owntone-server. As-is the main branch of this project does not build.

closes #50

Benefits of this PR and context:

Fixes #50.

How Has This Been Tested?

Verified that x86 image built and I could install & run the container.

Source / References:

[github-actions]

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[LinuxServer-CI]

I am a bot, here are the test results for this PR:
https://ci-tests.linuxserver.io/lspipepr/daapd/28.1-pkg-81ce7b79-pr-51/index.html
https://ci-tests.linuxserver.io/lspipepr/daapd/28.1-pkg-81ce7b79-pr-51/shellcheck-result.xml

[BernsteinA]

This looks good to me.
Can I get a quick ok from you @aptalca before I merge?

[aptalca]

@BernsteinA lgtm

[BernsteinA]

Ok so I don't know who has write permissions to merge this now...
cc @Roxedus

[Roxedus]

I got you

[BernsteinA]

I don't know where to put this, but we should add a notice somewhere that pulling the latest image will create a new settings file owntone.conf and will not read from your existing forked-daapd.conf
Could be a very disruptive change for many users...

[BernsteinA]

Maybe we should roll back this pr, and change the docker image name before applying it again?