feat: Add nextflow_release function

WIth the goal being to convert Octokit data into NextflowRelease objects,
create a function that can do that in one line.

src/NextflowRelease.ts

@@ -8,6 +8,21 @@ export type NextflowRelease = {
   allBinaryURL: string
 }
 
+/**
+ * Converts the raw OctoKit data into a structured NextflowRelease
+ * @param data A "release" data struct from OctoKit
+ * @returns `data` converted into a `NextflowRelease`
+ */
+export function nextflow_release(data: object) {
+  const nf_release: NextflowRelease = {
+    versionNumber: data["tag_name"],
+    isEdge: data["prerelease"],
+    binaryURL: nextflow_bin_url(data, false),
+    allBinaryURL: nextflow_bin_url(data, true)
+  }
+  return nf_release
+}
+
 /**
  * Gets the download URL of a Nextflow binary
  * @param release A "release" data struct from OctoKit