Update release for preview builds

[Kas-tle]

Needs

• Merge of Rewrite bibliothek-build-monitor#2 and deployment to Downloads API box
• Creation of a GitHub app on the organization per https://github.com/Kas-tle/base-release-action?tab=readme-ov-file#usage
  • Create a GH app with the scopes Contents (Read & Write), Metadata (Read-only), Variables (Read & Write), and Actions (Read-only) and grant it access to all repos from which builds are deployed:
    • GeyserMC/Geyser
    • GeyserMC/Floodgate
    • GeyserMC/GeyserConnect
    • GeyserMC/GeyserOptionalPack
    • GeyserMC/Hydraulic
    • GeyserMC/Erosion
  • Create org secrets RELEASE_APP_ID and RELEASE_APP_PK with the created app ID and its private key in normal pem format
  • On all repos, in order to give the action the required info to generate changelogs and have build numbers be correct, set a repository level variable named RELEASEACTION_PREVRELEASE where the format is {"master":{"c":"b863fa0f89bd15267a96a72efb84aec25f168d4c","t":"11"}}, using the branch name, last commit sha (c), and last build number (t)
• Make build action changes on all other repos

Usage

• Builds will now use sequential build numbers
• PRs with the tag PR: Needs Testing will now be deployed to the downloads api under the project geyser-preview and version pr.NUMBER; build number will be the run number for the PR action, but the latest endpoint can be used