feat(tvix/tracing): introduce common tvix-tracing crate

Introduce a new common crate that contains tracing boilerplate which then
can be used in the cli, tvix-store and tvix-build crates.
It has otlp as an optional feature, which is currently only used by
tvix-store.

Change-Id: I41468ac4d9c65174515d721513b96fea463d6ed2
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11758
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: Simon Hauser <simon.hauser@helsinki-systems.de>

tvix/Cargo.lock

@@ -4127,8 +4127,8 @@ dependencies = [
  "tonic-build",
  "tonic-reflection",
  "tracing",
- "tracing-subscriber",
  "tvix-castore",
+ "tvix-tracing",
  "url",
 ]
 
@@ -4204,12 +4204,12 @@ dependencies = [
  "tikv-jemallocator",
  "tokio",
  "tracing",
- "tracing-subscriber",
  "tvix-build",
  "tvix-castore",
  "tvix-eval",
  "tvix-glue",
  "tvix-store",
+ "tvix-tracing",
  "wu-manber",
 ]
 
@@ -4326,13 +4326,9 @@ dependencies = [
  "count-write",
  "data-encoding",
  "futures",
- "indicatif",
  "lazy_static",
  "lru",
  "nix-compat",
- "opentelemetry",
- "opentelemetry-otlp",
- "opentelemetry_sdk",
  "parking_lot 0.12.2",
  "pin-project-lite",
  "prost",
@@ -4359,13 +4355,27 @@ dependencies = [
  "tower",
  "tracing",
  "tracing-indicatif",
- "tracing-opentelemetry",
- "tracing-subscriber",
  "tvix-castore",
+ "tvix-tracing",
  "url",
  "walkdir",
 ]
 
+[[package]]
+name = "tvix-tracing"
+version = "0.1.0"
+dependencies = [
+ "indicatif",
+ "lazy_static",
+ "opentelemetry",
+ "opentelemetry-otlp",
+ "opentelemetry_sdk",
+ "tracing",
+ "tracing-indicatif",
+ "tracing-opentelemetry",
+ "tracing-subscriber",
+]
+
 [[package]]
 name = "typenum"
 version = "1.17.0"