Add VSCodium Support

[ThatIsAPseudo]

Hello, this great little app misses the support of VSCodium, an open-source VSCode release without MS branding/telemetry/licensing.

[mr-narender]

It be great if we can VSCodium support to this. thanks in advance.

[ron-t]

In the meantime take a look at https://github.com/hamxiaoz/open-folder-with-vs-code

[mr-narender]

In the meantime take a look at https://github.com/hamxiaoz/open-folder-with-vs-code

that's super Cool.! thanks @ron-t