Add conversion document for fs.ts

Author: MasterJ93

Conversion Documentation/common fs conversion.md

@@ -0,0 +1,25 @@
+#  Conversion for `common/fs.ts`
+
+## `export const fileExists = async (location: string): Promise<boolean>`
+
+This is redundant and will not be converted.
+
+Use `FileManager.default.fileExists(atPath:)` instead.
+
+## `export const readIfExists = async (filepath: string,): Promise<Uint8Array | undefined>`
+
+This is redundant and will not be converted.
+
+Use `try? Data(contentsOf: URL(fileURLWithPath: filepath))` ibstead.
+
+## `export const rmIfExists = async (filepath: string, recursive = false,): Promise<void>`
+
+This is redundant and will not be converted.
+
+Use `try? FileManager.default.removeItem(at: URL(fileURLWithPath:))` instead.
+
+## `export const renameIfExists = async (oldPath: string, newPath: string,): Promise<void>`
+
+This is redundant and will not be converted.
+
+Use `try? FileManager.default.moveItem(at: URL(fileURLWithPath:), to: URL(fileURLWithPath:))` instead.