Changes

Update to Tycho 4.0.7

Eliminate all the filtered requirements from every product p2.inf.
Use the CBI p2 aggregator for aggregating the EPP update site from the
various product update sites.
Eliminate the use of ant tasks and mirror activities and all related
infrastructure.
Update the splash and branding.
Update versions to 4.32 for 2024-06.
Use https://projects.eclipse.org/projects/technology.packaging instead
of https://www.eclipse.org/epp for about.properties
Comment out update.id advice until the fix from
https://github.com/eclipse-tycho/tycho/pull/3725 is available.
Use the JustJ execution environment to eliminate all the product
target-platform-configuration specializations.
Update the setup to install the CBI p2 aggregrator and add string
substitution tasks to populate the variables used by packaging.aggr.

https://github.com/eclipse-packaging/packages/issues/111

Update to Java 21

- Update github actions and Jenkins to use Java 21 for the build itself.
- Update all BREEs and .classpath files to Java 21.
- Update all product's specific -Dosgi.requiredJavaVersion=21.
- Update all product <vm> JRE_CONTAINERs to JavaSE-21.
- Invoke the aggregator with Java 21.
- Update the setp to configure a Java 21 JRE and populate JustJ Java 21
into the target platform and in the string substitutions.
- Eliminate avoidable warnings in org.eclipse.epp.package.common.

https://github.com/eclipse-packaging/packages/issues/130

Properly update Jenkinsfile to use Temurin Java 21.

https://github.com/eclipse-packaging/packages/issues/130

Allow all product requirements to be updated

- Change all feature includes in products to be installMode="root".
- Add a requires/import to the corresponding product feature, or common
feature, for each such modified feature include.
- Remove all references to org.eclipse.help because it is included by
org.eclipse.platform anyway.
- Change any non-epp plug-in include in a feature to a requires/import,
i.e., in the jee feature.xml.

https://github.com/eclipse-packaging/packages/issues/133

Update to Tycho 4.0.8-SNAPSHOT to process update.id advice

All the update.id advice was commented because Tycho 4.0.7 throws
exception; this re-enables all those.
Also, each p2.inf for each product is renamed to epp.p2.inf which avoids
a related bug parsing the advice file for the project as a whole as
opposed to parse the product-specific advice.
Define a file association in the setup so it's easy to open an
eep.p2.inf with the properties editor.

Update Scout startup screen for 2024-06 (#136)

Signed-off-by: Arthur van Dorp <arthur.vandorp@bsi-software.com>

Set version qualifiers with setGitDate script

Set version qualifiers with setGitDate script

Add CDT-LSP to CPP (#139)

Add note to N&N about Java 21

Prepare repo for 2024-06 M1

Much of the work was already done in parent commits,
this commit contains some last few items and some
cleanup to reflect the process improvements

Set version qualifiers with setGitDate script