Add issue templates for bug reports, feature requests, and documentation tasks

[zarfld]

Related to #112

Add configuration steps and troubleshooting for PoKeys devices with LinuxCNC in the User Documentation.

• Add a new section for configuration steps for PoKeys devices with LinuxCNC.
• Include steps for connecting hardware, updating LinuxCNC configuration files, and verifying connections.
• Add troubleshooting steps for common issues with PoKeys devices, including detection, digital inputs/outputs, and analog inputs/outputs.

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For more details, open the Copilot Workspace session.