feat(docs/en/volunteers.mdx): translate from Chinese version

Signed-off-by: Haonan Chen <chn@chn.moe>

src/content/docs/en/volunteers.mdx

@@ -0,0 +1,30 @@
+---
+title: 'Volunteer Staffing'
+description: 'Volunteer Staffing'
+sidebar:
+    label: 'Volunteer Staffing'
+---
+
+import { LinkButton } from '@astrojs/starlight/components';
+
+We are recruiting volunteers for Nix CN Meetup #2!
+
+<LinkButton href='https://forms.cloud.microsoft/r/MPL7NmaqXd' icon='external' variant='secondary' iconPlacement='end'>
+    Fill out the Volunteer Application Form (Chinese)
+</LinkButton>
+
+Open roles are as follows:
+
+- On-site Support (3 people)
+    - Handle check-in and souvenir distribution
+    - Provide guidance and answer general inquiries
+    - Pass the microphone for audience questions
+- Online Streaming Support (2 people)
+    - Monitor livestream status
+    - Answer general online inquiries
+- Refreshment Pickup (~5 people)
+    - Heavy lifting involved.
+- Venue Setup (2 people)
+    - Please arrive at the venue 3 days before the event starts.
+- Flexible (≤10 people)
+    - Tasks assigned based on real-time needs.