Add issue duplication detector agentic workflow with batch processing (#95)

* Initial plan

* Add issue duplication detector agentic workflow

Co-authored-by: Mossaka <5447827+Mossaka@users.noreply.github.com>

* Change to batch processing every 5 minutes for cost control

Co-authored-by: Mossaka <5447827+Mossaka@users.noreply.github.com>

* Allow all bash tools in issue duplication detector

Co-authored-by: Mossaka <5447827+Mossaka@users.noreply.github.com>

* Recompile workflow after merging main

Co-authored-by: pelikhan <4175913+pelikhan@users.noreply.github.com>

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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: Mossaka <5447827+Mossaka@users.noreply.github.com>
Co-authored-by: pelikhan <4175913+pelikhan@users.noreply.github.com>
Co-authored-by: Jiaxiao Zhou <duibao55328@gmail.com>

Author: 3 people