feat: add 5 ssrf-guard demos for v3.0.0 multi-module release #12

Job	Run time
Detect demos to build	3s
Build ssrf-guard-springai-demo	7s
Build ssrf-guard-demo	17s
Build ssrf-guard-jdkhttp-demo	8s
Build ssrf-guard-feign-demo	16s
Build ssrf-guard-okhttp-demo	8s
	59s

Provide feedback