* Add code coverage configuration and adjust test projects
- Introduced `Include` and `Threshold` properties across test project files for improved code coverage tracking.
- Added `coverlet.collector` as a dependency for coverage data collection.
- Removed unused `global using` directives and redundant imports for cleaner test codebases.
* Update GitHub Actions workflows for pull request triggers
- Adjusted `pr.yml` to include `patch/*` and `develop/*` branches.
- Removed redundant pull request triggers in `packages.yml` for cleaner configuration.
* Expand pull request triggers in GitHub Actions
- Renamed `PR` workflow to `pr` for consistency.
- Included `patch/*` and `develop/*` branches in `pr.yml` and `Build.CI.GitHubActions.cs`.
* Remove pack target from pull request workflows
- Updated `pr.yml` to exclude the pack step.
- Adjusted `Build.CI.GitHubActions.cs` to reflect the removal of the pack target.
* Remove `Elsa.Workflows.Api` from integration test project references
- Updated `Elsa.Workflows.IntegrationTests.csproj` to exclude `Elsa.Workflows.Api` from the `Include` list and project references for cleanup and simplification.
Eliminated the `Elsa.Labels`, `Elsa.Environments`, and `Elsa.OpenTelemetry` modules along with their handlers, contracts, models, and related functionality. This cleanup improves maintainability and aligns the codebase with recent architectural changes.
- Removed `ElsaStudioVersion` from `Directory.Build.props`.
- Added `PackageVersions` group in `Directory.Packages.props` with `ElsaStudioVersion` and new `Moq` package version.
- Updated input retrieval method in `ConfigureLiquidEngine.cs` to use `ActivityInput`.
- Clarified import for `InvokingActivityCallback` in `ScheduledChildCallbackBehavior.cs`.
- Changed target framework to `net9.0` in `Elsa.Http.UnitTests.csproj` and updated package references for flexibility.
