mv service_conf.yaml to conf/ and fix: add 'answer' as a parameter to 'generate' (#3379)

### What problem does this PR solve?
#3373

### Type of change

- [x] Refactoring
- [x] Bug fix

conf/service_conf.yaml

@@ -1 +0,0 @@
-../docker/service_conf.yaml

conf/service_conf.yaml

@@ -0,0 +1,74 @@
+ragflow:
+  host: 0.0.0.0
+  http_port: 9380
+mysql:
+  name: 'rag_flow'
+  user: 'root'
+  password: 'infini_rag_flow'
+  host: 'mysql'
+  port: 3306
+  max_connections: 100
+  stale_timeout: 30
+minio:
+  user: 'rag_flow'
+  password: 'infini_rag_flow'
+  host: 'minio:9000'
+es:
+  hosts: 'http://es01:9200'
+  username: 'elastic'
+  password: 'infini_rag_flow'
+redis:
+  db: 1
+  password: 'infini_rag_flow' 
+  host: 'redis:6379'
+
+# postgres:
+#   name: 'rag_flow'
+#   user: 'rag_flow'
+#   password: 'infini_rag_flow'
+#   host: 'postgres'
+#   port: 5432
+#   max_connections: 100
+#   stale_timeout: 30
+# s3:
+#   endpoint: 'endpoint'
+#   access_key: 'access_key'
+#   secret_key: 'secret_key'
+#   region: 'region'
+# azure:
+#   auth_type: 'sas'
+#   container_url: 'container_url'
+#   sas_token: 'sas_token'
+# azure:
+#   auth_type: 'spn'
+#   account_url: 'account_url'
+#   client_id: 'client_id'
+#   secret: 'secret'
+#   tenant_id: 'tenant_id'
+#   container_name: 'container_name'
+# user_default_llm:
+#   factory: 'Tongyi-Qianwen'
+#   api_key: 'sk-xxxxxxxxxxxxx'
+#   base_url: ''
+# oauth:
+#   github:
+#     client_id: xxxxxxxxxxxxxxxxxxxxxxxxx
+#     secret_key: xxxxxxxxxxxxxxxxxxxxxxxxxxxx
+#     url: https://github.com/login/oauth/access_token
+#   feishu:
+#     app_id: cli_xxxxxxxxxxxxxxxxxxx
+#     app_secret: xxxxxxxxxxxxxxxxxxxxxxxxxxxx
+#     app_access_token_url: https://open.feishu.cn/open-apis/auth/v3/app_access_token/internal
+#     user_access_token_url: https://open.feishu.cn/open-apis/authen/v1/oidc/access_token
+#     grant_type: 'authorization_code'
+# authentication:
+#   client:
+#     switch: false
+#     http_app_key:
+#     http_secret_key:
+#   site:
+#     switch: false
+# permission:
+#   switch: false
+#   component: false
+#   dataset: false