feat: Add OTel auto-instrumentation EE implementation (otel_auto_instrumentation_impl.rs)

- Create full EE implementation with config caching from global_settings
- Add environment variable generation for Python and TypeScript scripts
- Add OTLP JSON trace parsing with resource/span attribute extraction
- Add built-in HTTP collector server using Axum
- Add database storage for spans in job_otel_traces table
- Include comprehensive unit tests
- Update imports in bun_executor, deno_executor, python_executor
- Update OSS stub to re-export from impl module when enterprise feature enabled

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Co-Authored-By: Ruben Fiszel <rubenfiszel@users.noreply.github.com>

Author: github-actions[bot]

backend/windmill-worker/src/bun_executor.rs

@@ -52,7 +52,7 @@ use windmill_common::s3_helpers::attempt_fetch_bytes;
 use windmill_parser::Typ;
 
 #[cfg(feature = "enterprise")]
-use crate::otel_auto_instrumentation_ee::{
+use crate::otel_auto_instrumentation_impl::{
     get_otel_auto_instrumentation_config, get_otel_typescript_env_vars,
 };
 #[cfg(not(feature = "enterprise"))]

backend/windmill-worker/src/deno_executor.rs

@@ -24,7 +24,7 @@ use windmill_common::{
 use windmill_parser::Typ;
 
 #[cfg(feature = "enterprise")]
-use crate::otel_auto_instrumentation_ee::{
+use crate::otel_auto_instrumentation_impl::{
     get_otel_auto_instrumentation_config, get_otel_typescript_env_vars,
 };
 #[cfg(not(feature = "enterprise"))]

backend/windmill-worker/src/lib.rs

@@ -53,7 +53,7 @@ mod oracledb_executor;
 pub mod otel_ee;
 mod otel_oss;
 #[cfg(feature = "enterprise")]
-pub mod otel_auto_instrumentation_ee;
+pub mod otel_auto_instrumentation_impl;
 pub mod otel_auto_instrumentation_oss;
 mod pg_executor;
 #[cfg(feature = "php")]