Binding Discovery: Wrap calls to .GetCustomAttributes in try/catch

[clrudolphi]

🤔 What's changed?

In a small number of situations, binding discovery can fail if a test assembly uses an attribute (unrelated to Reqnroll) that can't be loaded. This can happen, for example, with the generic Connector when invoked against a .NET Framework test assembly and that assembly uses an attribute that belongs to another assembly that is loaded from the GAC. The generic connector (as a .net runtime app) can't load types from the GAC. Rather than have these situations fail the discovery completely, this PR catches those type load exceptions, logs them, and continues processing.

An example of this type of issue is logged in VS Issue #72.

⚡️ What's your motivation?

Allow the VS Extension to obtain (some) binding discovery results even in the face of unloadable types.
Partially address the errors mentioned in Discussion 977

🏷️ What kind of change is this?

• 🏦 Refactoring/debt/DX (improvement to code design, tooling, etc. without changing behaviour)

♻️ Anything particular you want feedback on?

1. What do you think of the idea?
2. How prominently should these type load errors be highlighted back to the user?
3. From what I can see, the Reqnroll binding discovery will send a json payload back to the Connector that includes error and warning collections, but that the Connector itself does nothing with these. Do we need an enhancement to the Connector and the VS extension to display this information?

📋 Checklist:

• I've changed the behaviour of the code
  • I have added/updated tests to cover my changes.
• My change requires a change to the documentation.
  • I have updated the documentation accordingly.
• Users should know about my change
  • I have added an entry to the "[vNext]" section of the CHANGELOG, linking to this pull request & included my GitHub handle to the release contributors list.

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[gasparnagy]

I have tested and this works fine!

[gasparnagy]

Released in v3.3.3 today: https://github.com/reqnroll/Reqnroll/releases/tag/v3.3.3