Add select-mode, version, pack and publish sub-actions (#656)

* Add select-mode, version, and publish sub-actions

* Rename

* No github-token needed for select-mode for now

* extend select-mode with publish-plan check and upload

* Rename base-branch to pr-base-branch

* add `pack` subaction

* `--from-pack` support in the publish subaction

* rename CLI arg

* update rolldown config

* rename pack dir input/output

* tweak retendion days

---------

Co-authored-by: Mateusz Burzyński <mateuszburzynski@gmail.com>

src/version/index.ts

@@ -0,0 +1,56 @@
+import * as core from "@actions/core";
+import { Git } from "../git.ts";
+import { setupOctokit } from "../octokit.ts";
+import { runVersion } from "../run.ts";
+
+try {
+  await main();
+} catch (err) {
+  core.setFailed((err as Error).message);
+}
+
+async function main() {
+  const githubToken = core.getInput("github-token", { required: true });
+  const script = core.getInput("script");
+  const commitMessage = core.getInput("commit-message", { required: true });
+  const prTitle = core.getInput("pr-title", { required: true });
+  const prDraft = core.getInput("pr-draft") || undefined;
+  const prBaseBranch = core.getInput("pr-base-branch");
+  const commitMode = core.getInput("commit-mode") || "git-cli";
+  const setupGitUser = core.getBooleanInput("setup-git-user");
+
+  // Validations
+  if (prDraft !== undefined && prDraft !== "always" && prDraft !== "create") {
+    throw new Error(`Invalid pr-draft input: ${prDraft}`);
+  }
+
+  // If the user needs to change the cwd, set `working-directory` in the step instead
+  const cwd = process.cwd();
+
+  const octokit = setupOctokit(githubToken);
+  const git = new Git({
+    octokit: commitMode === "github-api" ? octokit : undefined,
+    cwd,
+  });
+
+  if (setupGitUser) {
+    core.info("setting git user");
+    await git.setupUser();
+  }
+
+  const { pullRequestNumber } = await runVersion({
+    script,
+    githubToken,
+    git,
+    octokit,
+    cwd,
+    prTitle,
+    commitMessage,
+    // TODO: Use neutral message for PR description
+    hasPublishScript: true,
+    prDraft,
+    branch: prBaseBranch,
+  });
+
+  core.setOutput("pr-number", String(pullRequestNumber));
+}