Vida Foundation's .github v1.0.0

Vida Foundation's .github v1.0.0 (Pablo A. Domínguez Grau on June 27 2021)

• Add .github/issue-branch.yml to configure the Create Issue Branch GitHub App for the Vida Foundation organization.
• Add CHANGELOG.md to track changes made to the repo.
• Add README.md for newcomers.
• Add LICENSE (Apache-2.0).