Node stack filenames should be relative to app root

### Problem Statement

Currently, the Node SDK captures absolute paths for stack trace filenames.

This has a number of disadvantages:
- Change of hosting config or provider might change the paths
- Paths differ by OS/username

These differences can impact error grouping.

### Solution Brainstorm

For the Electron SDK the OS/username in paths was a major issue so we already cater for this by normalising paths to the application root.

We should do something similar for the Node SDK but this will be a breaking change since it would affect customer error grouping.

Comece localizando o tratamento dos nomes de arquivo dos stack traces do Node SDK e comparando-o com a normalização existente de application-root do Electron SDK. Considera-se concluído quando os nomes de arquivo dos stack traces do Node forem caminhos relativos estáveis e a breaking change e seu efeito no agrupamento de erros tiverem sido tratados.

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