Add dash0 tracing how-to

[kaspernissen]

Thank you for helping make the Dapr documentation better!

Please follow this checklist before submitting:

• Commits are signed with Developer Certificate of Origin (DCO - learn more)
• Read the contribution guide
• Commands include options for Linux, MacOS, and Windows within codetabs
• New file and folder names are globally unique
• Page references use shortcodes instead of markdown or URL links
• Images use HTML style and have alternative text
• Places where multiple code/command options are given have codetabs

In addition, please fill out the following to help reviewers understand this pull request:

Description

Added a how-to guide for setting up tracing and forwarding to Dash0 by using the OpenTelemetry Collector.

[salaboy]

/LGTM @marcduiker can you help me with this?

[marcduiker]

LGTM

[msfussell]

@kaspernissen - I would suggest adding Dash0 to the Next Steps section here https://docs.dapr.io/operations/observability/tracing/setup-tracing/#next-steps

[msfussell]

LGTM

[msfussell]

@kaspernissen - Have you set this as a private branch, since we need to update this with the latest in v1.15?

[kaspernissen]

@msfussell wierd, not that I know of. Maybe, there's some company policies in place. I've merged v1.15 into this.

[msfussell]

@kaspernissen - Thanks for this great contribution.