feat: fvm type definitions (#3531)

Introduces FVM Type Definitions relevant to Hub Util

crates/fluvio-hub-util/src/fvm.rs

@@ -0,0 +1,58 @@
+///! Fluvio Version Manager (FVM) type definitions.
+
+/// Available Rust Targets for Fluvio.
+///
+/// Refer: https://github.com/infinyon/fluvio/blob/f2c49e126c771d58d24d5f5cb0282a6aaa6b23ca/.github/workflows/ci.yml#L141
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq, Eq)]
+pub enum RustTarget {
+    /// arm-unknown-linux-gnueabihf
+    ArmUnknownLinuxGnueabihf,
+    /// armv7-unknown-linux-gnueabihf
+    Armv7UnknownLinuxGnueabihf,
+    /// x86_64-apple-darwin
+    X86_64AppleDarwin,
+    /// aarch64-apple-darwin
+    Aarch64AppleDarwin,
+    /// x86_64-pc-windows-gnu
+    X86_64PcWindowsGnu,
+}
+
+impl Display for RustTarget {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Self::ArmUnknownLinuxGnueabihf => write!(f, "arm-unknown-linux-gnueabihf"),
+            Self::Armv7UnknownLinuxGnueabihf => write!(f, "armv7-unknown-linux-gnueabihf"),
+            Self::X86_64AppleDarwin => write!(f, "x86_64-apple-darwin"),
+            Self::Aarch64AppleDarwin => write!(f, "aarch64-apple-darwin"),
+            Self::X86_64PcWindowsGnu => write!(f, "x86_64-pc-windows-gnu"),
+        }
+    }
+}
+
+impl RustTarget {
+    pub fn maybe_form_str(s: &str) -> Option<Self> {
+        match s {
+            "arm-unknown-linux-gnueabihf" => Some(Self::ArmUnknownLinuxGnueabihf),
+            "armv7-unknown-linux-gnueabihf" => Some(Self::Armv7UnknownLinuxGnueabihf),
+            "x86_64-apple-darwin" => Some(Self::X86_64AppleDarwin),
+            "aarch64-apple-darwin" => Some(Self::Aarch64AppleDarwin),
+            "x86_64-pc-windows-gnu" => Some(Self::X86_64PcWindowsGnu),
+            _ => None,
+        }
+    }
+}
+
+/// Artifact download URL
+#[derive(Debug, Deserialize, Serialize, PartialEq, Eq)]
+pub struct Artifact {
+    name: String,
+    download_url: Url,
+}
+
+/// Fluvio Version Manager Package for a specific architecture and version.
+#[derive(Debug, Deserialize, Serialize, PartialEq, Eq)]
+pub struct PackageSet {
+    pub version: String,
+    pub arch: RustTarget,
+    pub artifacts: Vec<Artifact>,
+}

crates/fluvio-hub-util/src/lib.rs

@@ -1,3 +1,4 @@
+mod fvm;
 mod hubaccess;
 mod package;
 mod package_meta_ext;