Move struct out of model folder.

src/structure/repo/VersionRepo.struct.ts

@@ -0,0 +1,33 @@
+import { join } from 'path'
+import { resolve as resolveURL } from 'url'
+import { BaseFileStructure } from '../BaseFileStructure'
+import { MinecraftVersion } from '../../util/MinecraftVersion'
+
+export class VersionRepoStructure extends BaseFileStructure {
+
+    constructor(
+        absoluteRoot: string,
+        relativeRoot: string
+    ) {
+        super(absoluteRoot, relativeRoot, 'versions')
+    }
+
+    public getLoggerName(): string {
+        return 'VersionRepoStructure'
+    }
+
+    public getFileName(minecraftVersion: MinecraftVersion, forgeVersion: string): string {
+        return `${minecraftVersion}-forge-${forgeVersion}`
+    }
+
+    public getVersionManifest(minecraftVersion: MinecraftVersion, forgeVersion: string): string {
+        const fileName = this.getFileName(minecraftVersion, forgeVersion)
+        return join(this.containerDirectory, fileName, `${fileName}.json`)
+    }
+
+    public getVersionManifestURL(url: string, minecraftVersion: MinecraftVersion, forgeVersion: string): string {
+        const fileName = this.getFileName(minecraftVersion, forgeVersion)
+        return resolveURL(url, join(this.relativeRoot, fileName, `${fileName}.json`))
+    }
+
+}