* chore: Add copyright and license headers
This commit adds the Apache 2.0 license and a copyright notice to the header of all source files. This ensures that the licensing and copyright information is clearly stated within the codebase.
* cargo fmt
* fix
* fmt
* fix clippy
- Create English and Chinese README files for the openobserve-otel directory
- Document configuration details for both OpenObserve and OTel Collector
- Include setup instructions and application integration examples
- Add badges for both OpenObserve and OpenTelemetry projects