feat: add CAMELEER_OIDC_TLS_SKIP_VERIFY to bypass cert verification for OIDC

Self-signed CA certs on the OIDC provider (e.g. Logto behind a reverse
proxy) cause the login flow to fail because Java's truststore rejects
the connection. This adds an opt-in env var that creates a trust-all
SSLContext scoped to OIDC HTTP calls only (discovery, token exchange,
JWKS fetch) without affecting system-wide TLS.

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

cameleer3-server-app/src/main/resources/application.yml

@@ -53,6 +53,7 @@ security:
   oidc-issuer-uri: ${CAMELEER_OIDC_ISSUER_URI:}
   oidc-jwk-set-uri: ${CAMELEER_OIDC_JWK_SET_URI:}
   oidc-audience: ${CAMELEER_OIDC_AUDIENCE:}
+  oidc-tls-skip-verify: ${CAMELEER_OIDC_TLS_SKIP_VERIFY:false}
 
 
 springdoc: