maven-proxy: Cloudflare Workers Maven read-through proxy

Usage: GET /{upstream}/{path}

Upstreams:
central → https://maven-central.storage-download.googleapis.com/maven2  (Maven Central via Google GCS mirror)
gradle-plugin-portal → https://plugins.gradle.org/m2  (Gradle Plugin Portal)
gtnh → https://nexus.gtnewhorizons.com/repository/public/  (GTNH Nexus)
forge → https://maven.minecraftforge.net  (Forge)
mojang → https://libraries.minecraft.net  (Mojang libraries)
jitpack → https://jitpack.io  (JitPack)
cursemaven → https://www.cursemaven.com  (Cursemaven)
modrinth → https://maven.modrinth.com  (Modrinth Maven)
fabric → https://maven.fabricmc.net  (Fabric)
spigotmc → https://hub.spigotmc.org/nexus/content/repositories/snapshots/  (SpigotMC snapshots)
sponge → https://repo.spongepowered.org/maven/  (SpongePowered)
lucko → https://repo.lucko.me  (Lucko)
papermc → https://repo.papermc.io/repository/maven-public/  (PaperMC)
opencollab → https://repo.opencollab.dev/main/  (OpenCollab)
wagyourtail → https://maven.wagyourtail.xyz/releases/  (wagyourtail)
aikar → https://repo.aikar.co/content/groups/aikar/  (Aikar)
mohistmc → https://maven.mohistmc.com/libraries/  (MohistMC)
sonatype-snapshots → https://oss.sonatype.org/content/repositories/snapshots/  (Sonatype snapshots)
nucleoid → https://maven.nucleoid.xyz  (Nucleoid)
chickenbones → https://chickenbones.net/maven/  (历史仓库,可能超时)
glease → https://maven.glease.net/repos/releases/  (历史仓库,可能超时)
ic2-player → https://maven.ic2.player.to/  (历史仓库,可能超时)
jenkins-usrv → http://jenkins.usrv.eu:8081/nexus/content/groups/public/  (仅 http)
k4u → https://maven.k-4u.nl/  (历史仓库,可能超时)
cil → https://maven.cil.li/  (历史仓库,可能超时)

Cache: edge (caches.default) + R2 durable. X-Cache: HIT|R2|R2-STALE|MISS|ERROR.