Refactor handling of non-fatal errors, including warnings. (#337)

* chore(nfes): Refactor handling of non-fatal errors, including warnings.

* chore(nfes): Remove unused method

* chore(nfes): Improve code doc

* chore(nfes): Move WResult to a 3 variants enum for more clarity

* chore(nfes): Rename some method names to be more explicit

* chore(nfes): Propagate WResult in validation process and policy enforcement

* chore(build): Bump weaver from v0.9.0 to v0.9.1

* feat(common): Make ignore_warnings more generic.

* chore(build): Fix Cargo.lock issue that occurred after automatic merge in GH

CHANGELOG.md

@@ -2,6 +2,14 @@
 
 All notable changes to this project will be documented in this file.
 
+## [0.9.1] - 2024-08-22
+
+Fixes
+
+* Warnings detected in the baseline registry are now ignored and non-fatal errors will not
+  interrupt any command before it completes
+  ([#337](https://github.com/open-telemetry/weaver/pull/337) by lquerel).
+
 ## [0.9.0] - 2024-08-19
 
 What's Changed