docs(RELEASE_NOTES.md): se agregan notas de lanzamiento

Author: cristopher1

RELEASE_NOTES.md

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+# Release notes
+
+Yeoman generator to create a simple base structure for api rest based in koa2 framework.
+
+**Features added in version 1.0.0:**
+
+- generator-koa2-simple-api-generator only include the minimum configurations for development environment.
+- Adds configurations for commitlint, prettier, husky, jsonwebtoken and other tools.
+- Creates Docker Compose configuration for postgresql, mysql, mariadb and mongodb.
+- Does not include tools such as: ORMs (sequelize and others), openapi or swagger, etc. See [generator-koa2-api-generator](https://github.com/cristopher1/generator-koa2-api-generator)
+- Adds docker support.
+- Adds docker compose support.
+- Include dotenv in dev dependencies.