The template repos need the License file to be in the root directory

In #779 and #731, when we moved the license file to the `licenses` directory the way Red Hat wants, we messed up what GitHub wants. GitHub displays the license for a repo, if any, but only if it is a file named LICENSE or LICENSE.md (with all caps) in the root directory. So we need to have that license file in both the root directory (for GitHub) and in the licenses directory (for Red Hat).

This means we need to put a license file back in the root directory in these templates:
- IBM/template-java-spring
- IBM/template-node-typescript
- IBM/template-graphql-typescript
- IBM/template-node-react
- IBM/template-node-angular

[Adding a license to a repository](https://docs.github.com/en/communities/setting-up-your-project-for-healthy-contributions/adding-a-license-to-a-repository) explains how this works in GitHub.

The Quarkus template has not been modified. GitHub displays it like this, which indicates the license:

The React template has been modified. GitHub now displays it like this, with no indication of any license:

Thanks to Mark Sturdevant for discovering this problem.