Add more functionality to the "vscode.workspace.fs" API.

[ericsnowcurrently]

I'm working on using the new "vscode.workspace.fs" API in the Python extension. There are some things we do for which we'd like to use the new API, but it doesn't provide the needed functionality. I'll list them here, but would be glad to open a separate issue for each if that would help.

• chmod() - currently using node's fs.chmod() Add vscode.workspace.fs.chmod(). #84513
• lstat() - currently using node's fs.lstat() Support stat() for symbolic links themselves. #84514
• createWriteStream() - currently using node's fs.createWriteStream() Add vscode.workspace.fs.createWriteStream(). #84515
• statSync() - currently using node's fs.statSync() Support for sync functions in the vscode.workspace.fs API. #84518
• readFileSync() - currently using node's fs.readFileSync() Support for sync functions in the vscode.workspace.fs API. #84518
• mkdirp() - currently wrote a wrapper around the new createDirectory() Add vscode.workspace.fs.mkdirp(). #84516
  • was using fs-extra's mkdirp(), but could have used node's mkdir() with the "recursive" option set to true
• mkdtemp() - currently using "tmp" (tmp.file()), but could have used node's fs.mkdtemp() Add vscode.workspace.fs.mkdtemp(). #84517
• glob() - currently using "glob"
• probably others

(Also see #84177 for possible bugs in the new API.)

[jrieken]

• chmod() - currently using node's fs.chmod() dupe of Enable FileSystemProvider to stat a file as readonly #73122
• lstat() - currently using node's fs.lstat() dupe of File Provider: support symbolic link operations #71204
• createWriteStream() - currently using node's fs.createWriteStream() -> we have some proposed api but nothing is final yet. @ericsnowcurrently What is the used for? Real big files or just because?
• statSync() - currently using node's fs.statSync()
• readFileSync() - currently using node's fs.readFileSync() Our design/architecture prohibits anything sync here. This will not happen.
• mkdirp() - currently wrote a wrapper around the new createDirectory()
  • was using fs-extra's mkdirp(), but could have used node's mkdir() with the "recursive" option set to true
• mkdtemp() - currently using "tmp" (tmp.file()), but could have used node's fs.mkdtemp()
• glob() - currently using "glob" - use findFiles
• probably others

[jrieken]

@ericsnowcurrently for the future: one ask -> one issue.