Add metadata GV loader api (#84)

* Add metadata GV loader api

* Register commands

* fix lint + docs issue

theseus/src/api/metadata.rs

@@ -0,0 +1,27 @@
+use crate::State;
+pub use daedalus::minecraft::VersionManifest;
+pub use daedalus::modded::Manifest;
+
+#[tracing::instrument]
+pub async fn get_minecraft_versions() -> crate::Result<VersionManifest> {
+    let state = State::get().await?;
+    let tags = state.metadata.minecraft.clone();
+
+    Ok(tags)
+}
+
+#[tracing::instrument]
+pub async fn get_fabric_versions() -> crate::Result<Manifest> {
+    let state = State::get().await?;
+    let tags = state.metadata.fabric.clone();
+
+    Ok(tags)
+}
+
+#[tracing::instrument]
+pub async fn get_forge_versions() -> crate::Result<Manifest> {
+    let state = State::get().await?;
+    let tags = state.metadata.forge.clone();
+
+    Ok(tags)
+}