Function buildTiltifyUrl

buildTiltifyUrl(
    fundraiserType: "user" | "team",
    fundraiserSlug: string,
    campaignSlug?: string,
): string
Builds an absolute Tiltify URL for a fundraiser / campaign.

Inverse of extractSlugsFromTiltifyUrl for the common case.
Parameters
- fundraiserType: "user" | "team"
- fundraiserSlug: string
- OptionalcampaignSlug: string
Returns string
Example
```
buildTiltifyUrl("user", "alice");           // "https://tiltify.com/@alice"
  buildTiltifyUrl("user", "alice", "spring"); // "https://tiltify.com/@alice/spring"
  buildTiltifyUrl("team", "team-foo", "bar"); // "https://tiltify.com/+team-foo/bar"
```
- Defined in packages/tiltify/core/src/urls.ts:114