feat: build initial prototype (#1)

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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.
- [x] My pull request uses an appropriate title, matching the conventional commit standards.
- [x] My scope of feat/fix/chore/etc. correctly matches the nature of changes in my pull request.

### Tests

- [x] My contribution adds new code, and I have added tests to cover it.
- [ ] My contribution modifies existing code, and I have updated the tests to reflect these changes.
- [x] All new and existing tests pass locally with my changes.
- [x] Code coverage remains at or above the configured threshold.

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

src/modules/sendUnentitledResponse.ts

@@ -0,0 +1,37 @@
+/**
+ * @copyright nhcarrigan
+ * @license Naomi's Public License
+ * @author Naomi Carrigan
+ */
+
+import {
+  ActionRowBuilder,
+  ButtonBuilder,
+  ButtonStyle,
+  MessageFlags,
+  type ChatInputCommandInteraction,
+} from "discord.js";
+import { unentitledImage } from "../config/entitlements.js";
+import { getArtComponents } from "./getArtComponents.js";
+
+/**
+ * Responds with a default image and a button to subscribe.
+ * @param interaction - The interaction object from Discord.
+ */
+export const sendUnentitledResponse = async(
+  interaction: ChatInputCommandInteraction,
+): Promise<void> => {
+  const [ container ] = getArtComponents(unentitledImage);
+  const components = [
+    container,
+    new ActionRowBuilder<ButtonBuilder>().addComponents(
+      new ButtonBuilder().
+        setStyle(ButtonStyle.Premium).
+        setSKUId("1396226651620118579"),
+    ),
+  ];
+  await interaction.reply({
+    components: components,
+    flags:      [ MessageFlags.IsComponentsV2 ],
+  });
+};