feat: initial project prototype (#1)

### Explanation

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### Issue

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### Attestations

- [x] I have read and agree to the [Code of Conduct](https://docs.nhcarrigan.com/community/coc/)
- [x] I have read and agree to the [Community Guidelines](https://docs.nhcarrigan.com/community/guide/).
- [x] My contribution complies with the [Contributor Covenant](https://docs.nhcarrigan.com/dev/covenant/).

### Dependencies

- [x] I have pinned the dependencies to a specific patch version.

### Style

- [x] I have run the linter and resolved any errors.
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- [x] My scope of feat/fix/chore/etc. correctly matches the nature of changes in my pull request.

### Tests

- [ ] My contribution adds new code, and I have added tests to cover it.
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### Versioning

Major - My pull request introduces a breaking change.

Reviewed-on: #1
Co-authored-by: Naomi Carrigan <commits@nhcarrigan.com>
Co-committed-by: Naomi Carrigan <commits@nhcarrigan.com>

src/config/locales.ts

@@ -0,0 +1,58 @@
+/**
+ * @copyright nhcarrigan
+ * @license Naomi's Public License
+ * @author Naomi Carrigan
+ */
+
+import { Locale } from "discord.js";
+
+/**
+ * List of locales that LibreTranslate supports. This is a mix of
+ * Discord locales and mapped values.
+ */
+const supportedLocales: Array<string> = [
+  Locale.Indonesian,
+  "en",
+  Locale.Bulgarian,
+  "zh",
+  "zt",
+  Locale.Czech,
+  Locale.Danish,
+  Locale.Dutch,
+  Locale.Finnish,
+  Locale.French,
+  Locale.German,
+  Locale.Greek,
+  Locale.Hindi,
+  Locale.Hungarian,
+  Locale.Italian,
+  Locale.Japanese,
+  Locale.Korean,
+  Locale.Lithuanian,
+  Locale.Polish,
+  "pt",
+  Locale.Romanian,
+  Locale.Russian,
+  "es",
+  "sv",
+  Locale.Thai,
+  Locale.Turkish,
+  Locale.Ukrainian,
+];
+
+/**
+ * Maps a Discord locale string to the corresponding LibreTranslate
+ * locale when they are different.
+ */
+const mappedLocales: Partial<Record<Locale, string>> = {
+  [Locale.EnglishGB]:    "en",
+  [Locale.EnglishUS]:    "en",
+  [Locale.ChineseCN]:    "zh",
+  [Locale.ChineseTW]:    "zt",
+  [Locale.PortugueseBR]: "pt",
+  [Locale.SpanishES]:    "es",
+  [Locale.SpanishLATAM]: "es",
+  [Locale.Swedish]:      "sv",
+};
+
+export { supportedLocales, mappedLocales };