https://github.com/microsoft/vscode/issues/101978

The class-name-casing rule has also been replaced by the configurable `naming-convention` rule

use `path.win32.*` and `fsPath` when dealing with file-uris on windows, https://github.com/microsoft/vscode/issues/90208

Call it `joinPath`, add tests, don't reuse the implemention from resources.ts, https://github.com/microsoft/vscode/issues/90208

move `joinPaths` to URI (static factory function), option 2 in  https://github.com/microsoft/vscode/issues/90208

This reverts commit e24fefe0.

This reverts commit 2c1c691b.

This reverts commit 30886e2f, reversing
changes made to 525f1e47.

tweak test for less encoding, restore URI.toString(true) behaviour, escape backslash in non-windows cases

Add tests that check our logic against Nodejs's pathToFileURL

This reverts commit b59ecadf6b1c3c84213b8300df8ba8ce962e6625.

This reverts commit b59ecadf6b1c3c84213b8300df8ba8ce962e6625.