Support for sidecar containers

[drinkataco]

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name: Pull Request about: Create a pull request to contribute to the Helm chart collection

Description

1. Support changing servicePort for deployment services
2. Add support for side car containers
3. Add instructions for setting up transmission through gluetun. This took me a while to get running properly, so better share

Type of change

• [x] Bug fix (non-breaking change which fixes an issue)
• [x] Non-breaking change which adds functionality
• [x] Documentation update

Checklist

• [x] I have updated the chart version in Chart.yaml according to semantic versioning.
• [x] I have included any new or changed values in the values.yaml file and documented them in the README if applicable.
• [x] My changes are tested and proven to work.
• [x] I have performed a self-review of my own code.
• [x] I have commented my code, particularly in hard-to-understand areas.
• [x] I have made corresponding changes to the documentation.
• [x] My changes generate no new warnings.