Add copilot-instructions.md

Author: yuokada

.github/copilot-instructions.md

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+## Prerequisites
+- java 17 or 21
+- quarkus 3.15
+- picoCLI 4.6.1 or higher
+- Apache maven 3.9 or later
+- Docker 27.0 or later
+- memcached 1.6 or later