Create a DISCLAIMER file for the repositories being released

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No description provided.

[LightGuard]

• incubator-kie-drools needs the DISCLAIMER file and a NOTICE file in the repo
• incubator-kie-optaplanner needs the DISCLAIMER file and the NOTICE file
• incubator-kie-kogito-runtimes needs the DISCLAIMER file
• incubator-kie-kogito-apps needs the DISCLAIMER file
• incubator-kie-kogito-images needs the DISCLAIMER file and the NOTICE file
• incubator-kie-tools needs the DISCLAIMER file

DISCLAIMER file:

Apache KIE (incubating) is an effort undergoing incubation at The Apache Software
Foundation (ASF), sponsored by the name of Apache Incubator. Incubation is
required of all newly accepted projects until a further review indicates that
the infrastructure, communications, and decision making process have stabilized
in a manner consistent with other successful ASF projects. While incubation
status is not necessarily a reflection of the completeness or stability of the
code, it does indicate that the project has yet to be fully endorsed by the ASF.

Some of the incubating project’s releases may not be fully compliant with ASF
policy. For example, releases may have incomplete or un-reviewed licensing
conditions. What follows is a list of known issues the project is currently
aware of (note that this list, by definition, is likely to be incomplete):

* Hibernate, an LGPL project, is being used. Hibernate is in the process of relicensing to ASL v2
* Some files, particularly test files, and those not supporting comments, may be missing the ASF Licensing Header
* 

If you are planning to incorporate this work into your product/project, please
be aware that you will need to conduct a thorough licensing review to determine
the overall implications of including this work. For the current status of this
project through the Apache Incubator visit:
https://incubator.apache.org/projects/kie.html

[LightGuard]

@porcelli

[yesamer]

@LightGuard Disclaimer added in kie-tools in this PR

[LightGuard]

• issue-1159 Adding required DISCLAIMER incubator-kie-kogito-runtimes#3500
• issue-1159 Adding required DISCLAIMER incubator-kie-kogito-apps#2045
• issue-1159 Adding required DISCLAIMER file incubator-kie-kogito-images#1765
• issue-1159 Adding DISCLAIMER file incubator-kie-drools#5919