chore: rename cameleer3 to cameleer

Rename Java packages from com.cameleer3 to com.cameleer, module
directories from cameleer3-* to cameleer-*, and all references
throughout workflows, Dockerfiles, docs, migrations, and pom.xml.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

cameleer-server-app/src/test/resources/application-test.yml

@@ -0,0 +1,18 @@
+spring:
+  flyway:
+    enabled: true
+
+cameleer:
+  server:
+    indexer:
+      debouncems: 100
+    ingestion:
+      buffercapacity: 100
+      batchsize: 10
+      flushintervalms: 100
+    agentregistry:
+      pingintervalms: 1000
+    security:
+      bootstraptoken: test-bootstrap-token
+      bootstraptokenprevious: old-bootstrap-token
+      infrastructureendpoints: true