feat: get last release with git tags

- Remove the `getLastRelease` plugin type
- Retrieve the last release based on Git tags
- Create the next release Git tag before calling the `publish` plugins

BREAKING CHANGE: Remove the `getLastRelease` plugin type

The `getLastRelease` plugins will not be called anymore.

BREAKING CHANGE: Git repository authentication is now mandatory

The Git authentication is now mandatory and must be set via `GH_TOKEN`, `GITHUB_TOKEN`,  `GL_TOKEN`, `GITLAB_TOKEN` or `GIT_CREDENTIALS` as described in [CI configuration](https://github.com/semantic-release/semantic-release/blob/caribou/docs/usage/ci-configuration.md#authentication).

cli.js

@@ -17,7 +17,6 @@ module.exports = async () => {
       'Comma separated list of paths or packages name for the verifyConditions plugin(s)',
       list
     )
-    .option('--get-last-release <path>', 'Path or package name for the getLastRelease plugin')
     .option('--analyze-commits <path>', 'Path or package name for the analyzeCommits plugin')
     .option(
       '--verify-release <paths>',