Add support for an initial repo with no tags, yet

[NullVoxPopuli]

I'm seeing in the logs:

 Error: Command failed with exit code 128: git describe --abbrev=0 --tags
fatal: No names found, cannot describe anything.

from: https://github.com/NullVoxPopuli/ember-eslint-parser/actions/runs/7255082401/job/19765027127

which does match what I see locally:

❯ git describe --abbrev=0 --tags
fatal: No names found, cannot describe anything.

[NullVoxPopuli]

oh this is actually from:

at Object.lastTag (
  /home/runner/work/ember-eslint-parser/ember-eslint-parser/node_modules/
    .pnpm/@ef4+lerna-changelog@2.0.0/node_modules/
      @ef4/lerna-changelog/lib/git.js:31:18)\n' 

[NullVoxPopuli]

hmm, this is the code in ef4/lerna-changelog

  public async createMarkdown(options: Options = {}) {
    const from = options.tagFrom || (await Git.lastTag());
    const to = options.tagTo || "HEAD";

    const releases = await this.listReleases(from, to);

    return this.renderer.renderMarkdown(releases);
  }

so it seems a whole bunch of code needs to get skipped? because there are no releases

[NullVoxPopuli]

Here is a step one: embroider-build/github-changelog#7

which may help with folks who haven't created a tag recently, or did so manually, and potentially incorrectly.

[mansona]

I responded to the PR in github-changelog, it might be a little while before we can merge that 🙃

In the mean time, what about adding a check somewhere here to see if there are any tags at all and displaying an error saying they need at least one tag (and maybe suggesting that they tag the initial commit as v0.0.0 or something)? What do you think?