docs: deploy langfuse for development

[friedrichwilken]

Description

Changes proposed in this pull request:

• add docs how to deploy langfuse locally and on a k8s cluster for dev work.

Related issue(s)
#49

[github-actions]

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[mmitoraj]

Suggested change

	A local instance of LangFuse will bring it's own instance of `Redis` with some basic authentication setup. The password defaults to `myredissecret` (if you do not specify the env var `REDIS_AUTH`) and LangFuse will automatically use the database number `0` of that Redis instance (remember that it comes by default with 16 databases, 0 to 15).
	A local instance of LangFuse brings its own Redis instance with some basic authentication setup. The password defaults to `myredissecret` (if you do not specify the env var `REDIS_AUTH`) and LangFuse automatically uses the database number `0` of that Redis instance (remember that by default, it comes with 16 databases, 0 to 15).

[mmitoraj]

We could also link to LangFuse official docs in the first mention.

[friedrichwilken]

Good idea, I will add this.

[mmitoraj]

Suggested change

	a) You let the `Companion` use the Redis instance that comes with Langfuse and addressing database `1` by adding these lines in your `config/config.json`:
	1. You let the Companion use the Redis instance that comes with LangFuse and addressing database `1` by adding these lines in your `config/config.json`:

To double-check if I get it right: the Redis instance comes with LangFuse and database 1? What is it addressing? Did you mean "corresponding"?

[friedrichwilken]

LangFuse comes with Redis. Redis has multiple Databases, 0 to 16. We want to set the Companion to use database 1.
Maybe:

1. You let the Companion use the Redis instance that comes with LangFuse by addressing database `1` in `config/config.json`