[Bitwarden] Add Traefik-Middleware and Custom env-var support

[PrivatePuffin]

This PR adds:

• Traefik-middleware support
• The ability to define custom env-vars for bitwarden like https://github.com/cdwv/bitwarden-k8s

Please do confirm this is working with additional testing

Fixes #4 Fixes #5

[PrivatePuffin]

@sgissi It passed my CI now and it's cleaned up a little :)

[sgissi]

@Ornias1993 Can you check the patches I have sent? I reverted the space change and updated the rest. I understand they came from YAML lint but suggestions need to take context into consideration. Explanation comments must adhere to the spacing so they are readable. Configuration options is a different thing, likely I will make them explicit instead of a comment section in the future but for now, I will keep the current format without the leading space and with a trailing space.

[PrivatePuffin]

• Trailing spaces are "how not to code or comment 101"

• Not using spaces in front of commenting is very non-standard and not something i'm even open to discussing. It's freaking confusing because no-one does.

Sorry you're not going to change my mind on that.

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About the code:

• code looks fine 👍

[sgissi]

No problem, I was just explaining my rationale, not trying to change your mind. For regular comments we are in agreement (leading space, no trailing). For configuration options, I rather have the way I did. We can agree to disagree on that :)

I'll finish my testing and merge. Thank you very much for the help and effort getting these features in.

[PrivatePuffin]

We can agree to disagree on that :)

Precisely! 👍

I'll finish my testing and merge. Thank you very much for the help and effort getting these features in.

No problem, thanks for the quick work on this :)