Refactor prerequisite installation

- Remove `pre.ts` and merge into `main.ts`
- Ensures prerequisite installation happens at the same time that
  vale-action runs, allowing manual installation of ruby/python
- Adds additional debugging outputs

action.yml

@@ -62,5 +62,4 @@ inputs:
 
 runs:
   using: "node20"
-  pre: lib/pre.js
   main: "lib/main.js"

lib/input.js

@@ -63,6 +63,11 @@ function logIfDebug(msg) {
  */
 function get(tok, dir) {
     return __awaiter(this, void 0, void 0, function* () {
+        logIfDebug('Ensuring core python and ruby dependencies are present');
+        yield exec.exec('pip', ['install', 'docutils']);
+        logIfDebug('`pip install docutils` complete');
+        yield exec.exec('gem', ['install', 'asciidoctor', '--user-install']);
+        logIfDebug('`gem install asciidoctor --user-install` complete');
         const localVale = yield (0, install_1.installLint)(core.getInput('version'));
         const localReviewDog = yield (0, install_1.installReviewDog)("0.15.0");
         const valeFlags = core.getInput("vale_flags");

src/input.ts

@@ -49,6 +49,14 @@ function logIfDebug(msg: string) {
  * Parse our user input and set up our Vale environment.
  */
 export async function get(tok: string, dir: string): Promise<Input> {
+  logIfDebug('Ensuring core python and ruby dependencies are present');
+
+  await exec.exec('pip', ['install', 'docutils']);
+  logIfDebug('`pip install docutils` complete');
+
+  await exec.exec('gem', ['install', 'asciidoctor', '--user-install']);
+  logIfDebug('`gem install asciidoctor --user-install` complete');
+
   const localVale = await installLint(core.getInput('version'));
   const localReviewDog = await installReviewDog("0.15.0");
   const valeFlags = core.getInput("vale_flags");