refactor: improve performance for Jaeger APIs

[zyy17]

I hereby agree to the terms of the GreptimeDB CLA.

Refer to a related PR or issue link (optional)

What's changed and what's your intention?

1. Add the dimension table greptime_trace_services to record all the service_name. It may be a workaround solution, but it is effective in a large trace table;

2. Expand the default limit from 100 to 2000;

PR Checklist

Please convert it to a draft if some of the following conditions are not met.

• I have written the necessary rustdoc comments.
• I have added the necessary unit tests and integration tests.
• This PR requires documentation updates.
• API changes are backward compatible.
• Schema or data changes are backward compatible.

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[shuiyisong]

While creating the service table, we can put a comment in the origin trace table, so that we can automatically switch to using the service table for the /services API.

But that can be another PR. 🚀

[shuiyisong]

LGTM 🚀

[sunng87]

We need to think about this again. This means when user needs to use a custom table name for traces, it has specify two tables names. And this will also expose the services table from an implementation to an API because user has to understand it and provide a correct name on ingestion and query.

I would suggest to use a pattern to generate service table from user-provided trace table name, for example, append a fixed suffix _services

[zyy17]

sounds reasonable.