Show Algora bounties in issue notifications

[SimplyRayYZL]

Summary

• scan Algora bot comments for bounty lines when new issues are collected
• total multiple sponsor amounts into a compact bounty label
• include the bounty label in the Discord issue notification message

Refs tscircuit/contribution-notifications#4, which points at this repo as the live successor.

Validation

• npx tsc --noEmit
• npx biome check scripts\issue-notifications.ts
• git diff --check

[vercel]

@SimplyRayYZL is attempting to deploy a commit to the tscircuit Team on Vercel.

A member of the Team first needs to authorize it.