docs: add hands-on 'Try it locally' section to Quick start

[jespino]

Mirror the VictoriaMetrics and VictoriaLogs Quick Start restructuring: open with the two ways to get started (try locally with the single binary vs install for real use), then walk through downloading the binary, starting VictoriaTraces, ingesting an example span via OTLP, exploring it in VMUI and the Jaeger API, and optionally generating realistic traces with the HotROD demo app. The existing installation content is kept unchanged.

[cubic-dev-ai]

No issues found across 1 file

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[jiekun]

Hello. Could you link the issue in VictoriaMetrics and VictoriaLogs as well? I wonder how the changes look like in these repo. The current change seems to be duplicated with:
https://docs.victoriametrics.com/victoriatraces/quick-start/#starting-victoriatraces-single-node-from-a-binary and other sections. I didn't mean the change is not necessary, because we can (and should) unify the format with other repo by deleting the existing content. Otherwise it looks very confusing to me.

[jespino]

@jiekun the changes for VictoriaMetrics and VictoriaLogs are already merged so you can see the final results in docs.victoriametrics.com

About the doplication, I agree, actually what I'm trying to do is providing more "production like" documentation of how using the single-node binary, like you can see in the docs in VictoriaMetrics, or in the VictoriaMetrics/VictoriaLogs#1610, let me add those changes together here, because makes a lot of sense. If you prefer we can split them in 2 PRs like I did for victoria logs.