feature: DJErp OAuth bypass 인바운드 처리 추가

- DJErpApiAdapterController: /dj/** 경로 전용 inbound 라우팅 컨트롤러
- DJErpApiAdapterService: DJErp 전용 어댑터 서비스
- DJErpOAuth2Controller: /dj/oauth/token, /dj/oauth2/token 토큰 발급 (Spring Security 우회)
- DJErpOAuth2AccessTokenRequest/Response: 토큰 요청/응답 VO
- HttpClient5AdapterServiceBypass: HttpClient5 기반 bypass 어댑터 (OAuth 토큰 자동 갱신 포함)
- RestAdapterMethodUrlFallbackRequestAction: URI 경로 세그먼트 축소 fallback 키 탐색 Action
- ApiAdapterController: 전체 주석처리 (비활성화)
- elink-online-common 서브모듈 업데이트

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/main/java/com/eactive/eai/authserver/custom/DJErpOAuth2AccessTokenRequest.java

@@ -0,0 +1,55 @@
+package com.eactive.eai.authserver.custom;
+
+import java.io.Serializable;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+@SuppressWarnings("serial")
+public class DJErpOAuth2AccessTokenRequest implements Serializable {
+
+	@JsonProperty("grant_type")
+	private String grantType;
+	@JsonProperty("client_id")
+	private String clientId;
+	@JsonProperty("client_secret")
+	private String clientSecret;
+	private String scope;
+
+	public String getGrantType() {
+		return grantType;
+	}
+
+	public void setGrantType(String grantType) {
+		this.grantType = grantType;
+	}
+
+	public String getClientId() {
+		return clientId;
+	}
+
+	public void setClientId(String clientId) {
+		this.clientId = clientId;
+	}
+
+	public String getClientSecret() {
+		return clientSecret;
+	}
+
+	public void setClientSecret(String clientSecret) {
+		this.clientSecret = clientSecret;
+	}
+
+	public String getScope() {
+		return scope;
+	}
+
+	public void setScope(String scope) {
+		this.scope = scope;
+	}
+
+	@Override
+	public String toString() {
+		return "DJErpOAuth2AccessTokenRequest [grantType=" + grantType + ", clientId=" + clientId
+				+ ", clientSecret=" + clientSecret + ", scope=" + scope + "]";
+	}
+}