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Part of #40

Add slf4j configuration for php, committers and scout

Because the slf4j.simple is not included "naturally"
by any of the features already in php, committers or
scout, include it explicitly here.

Includes revert "Don't add slf4j.simple to products that don't include slf4j already"
This reverts commit a1969248c1f9b76ed4c6d71d59f7965bb3e42bf2.

Fixes https://github.com/eclipse-packaging/packages/issues/27

Remove commented out code

Re-enable Mylyn for PHP

Add GitHub actions to eclipse-packages (#49)

Always include slf4j.simple or m2e.logback in each package (#48)

Fixes #27 specifically a follow up for #47:
https://github.com/eclipse-packaging/packages/pull/47#issuecomment-1692816329

Upload bundle information in GitHub Actions (#50)

Prepare repo for 2023-09 RC1

Part of #51

Set version qualifiers with setGitDate script

Remove configuration that limited packages being built

With 65cfd12403d5b2fa02c68bce42aba2286adf6560 we use a matrix
to build all packages which is much more robust than trying
to do what the settings.xml generation did.