Move Away From Using vscode.workspace.workspaceFolders[0]

[chrstinalin]

There's several places in the codebase where vscode.workspace.workspaceFolders[0]. This will cause issues if the user opens unrelated folders in their workspace.

Ex. a new window opens to a particular version. For whatever reason, the user opens a different folder that exists outside of the addons folder inside that VS Code instance. The commenting API will apply to that folder as well.