* feat(request_id): add support for UUID v7 in `RequestId`
feature flag `uuid_v7` is introduced which inturn enables `v7` feature flag in the `uuid` dependency
Support documentation is added in `README.md`, `src/lib.rs` and `src/request_id.rs`
This feature only works if this crate or any crate dependent on this crate has enabled the compile time configuration flag provided to the rust compiler. `RUSTFLAGS="--cfg uuid_unstable"`.
* chore: add github action to test UUID v7 feature flag
* chore: add the uuid_unstable cfg in the request id impl
* chore: add compiler_error for undesired state in configuration flags
* chore: move the compiler error in request_id module
* chore: fix formatting
* fix(action): fix github action for uuid_v7 with RUSTDOCFLAGS
* Add support for opentelemetry 0.17, actix-web rc.2
* Enable actix-web macros for tests
* Link to newest opentelemetry in readme
* Add opentelemetry_0_17 to workflows