feat: Add local file provider and wire everything up in the file module (#7134)

packages/utils/src/file/abstract-file-provider.ts

@@ -0,0 +1,24 @@
+import { FileTypes, IFileProvider } from "@medusajs/types"
+
+export class AbstractFileProviderService implements IFileProvider {
+  static identifier: string
+
+  getIdentifier() {
+    return (this.constructor as any).identifier
+  }
+
+  async upload(
+    file: FileTypes.ProviderUploadFileDTO
+  ): Promise<FileTypes.ProviderFileResultDTO> {
+    throw Error("upload must be overridden by the child class")
+  }
+  async delete(file: FileTypes.ProviderDeleteFileDTO): Promise<void> {
+    throw Error("delete must be overridden by the child class")
+  }
+
+  async getPresignedDownloadUrl(
+    fileData: FileTypes.ProviderGetFileDTO
+  ): Promise<string> {
+    throw Error("getPresignedDownloadUrl must be overridden by the child class")
+  }
+}

packages/utils/src/file/index.ts

@@ -0,0 +1 @@
+export * from "./abstract-file-provider"