Add KDC authority service; update registry, knoe UI, conf, and scan artifacts

- New authority/kdc Spring Boot microservice (Dockerfile, HealthController, application.properties)

- Updated authority/pom.xml, k8s/registry/deployment.yaml, knoe/ui/screens, conf, etc/ init scripts, modes/k3s/knoe-db/.version, scan artifacts

- Added project images (knoe.png, architecture diagram, screenshot)

Co-authored-by: Junie <junie@jetbrains.com>

authority/kdc/Dockerfile

@@ -0,0 +1,27 @@
+FROM ubuntu:24.04
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get update \
+  && apt-get install -y --no-install-recommends \
+    acl \
+    adcli \
+    attr \
+    ca-certificates \
+    curl \
+    dnsutils \
+    krb5-admin-server \
+    krb5-config \
+    krb5-kdc \
+    krb5-user \
+    libnss-winbind \
+    libpam-krb5 \
+    libpam-winbind \
+    python3-samba \
+    realmd \
+    samba \
+    samba-common-bin \
+    samba-dsdb-modules \
+    samba-vfs-modules \
+    winbind \
+  && rm -rf /var/lib/apt/lists/*

authority/kdc/src/main/java/org/prole/authority/AuthorityApplication.java

@@ -0,0 +1,11 @@
+package org.prole.authority;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class AuthorityApplication {
+    public static void main(String[] args) {
+        SpringApplication.run(AuthorityApplication.class, args);
+    }
+}

authority/kdc/src/main/java/org/prole/authority/HealthController.java

@@ -0,0 +1,13 @@
+package org.prole.authority;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class HealthController {
+
+    @GetMapping("/health")
+    public String health() {
+        return "ok";
+    }
+}

authority/kdc/src/main/resources/application.properties

@@ -0,0 +1,3 @@
+server.port=8080
+
+management.endpoints.web.exposure.include=health,info

authority/kdc/src/test/java/org/prole/authority/AuthorityApplicationTests.java

@@ -0,0 +1,12 @@
+package org.prole.authority;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class AuthorityApplicationTests {
+
+    @Test
+    void contextLoads() {
+    }
+}