[enhancement](log4j) support high performance mode for log4j to escape potential bottleneck for doris read and write (#20759)

As we know, log4j2 some times may be bottleneck in doris fe when there are many logs to be output in sync mode while asynchronous logging has a better performance， and we find that capturing caller location has a similar impact across all logging libraries, and slows down asynchronous logging by about 30-100x. so, here we provide three log mode for log4j2 to meet the needs of different users.
refer to https://logging.apache.org/log4j/2.x/performance.html

fe/fe-common/src/main/java/org/apache/doris/common/Config.java

@@ -34,10 +34,10 @@ public class Config extends ConfigBase {
      * sys_log_dir:
      *      This specifies FE log dir. FE will produces 2 log files:
      *      fe.log:      all logs of FE process.
-     *      fe.warn.log  all WARNING and ERROR log of FE process.
+     *      fe.warn.log  all WARN and ERROR log of FE process.
      *
      * sys_log_level:
-     *      INFO, WARNING, ERROR, FATAL
+     *      INFO, WARN, ERROR, FATAL
      *
      * sys_log_roll_num:
      *      Maximal FE log files to be kept within an sys_log_roll_interval.
@@ -65,9 +65,18 @@ public class Config extends ConfigBase {
             "The path of the FE log file, used to store fe.log"})
     public static String sys_log_dir = System.getenv("DORIS_HOME") + "/log";
 
-    @ConfField(description = {"FE 日志的级别", "The level of FE log"}, options = {"INFO", "WARNING", "ERROR", "FATAL"})
+    @ConfField(description = {"FE 日志的级别", "The level of FE log"}, options = {"INFO", "WARN", "ERROR", "FATAL"})
     public static String sys_log_level = "INFO";
 
+    @ConfField(description = {"FE 日志的输出模式，其中 NORMAL 为默认的输出模式，日志同步输出且包含位置信息，"
+            + "BRIEF 模式是日志同步输出但不包含位置信息，ASYNC 模式是日志异步输出且不包含位置信息，三种日志输出模式的性能依次递增",
+            "The output mode of FE log, and NORMAL mode is the default output mode, which means the logs are "
+                    + "synchronized and contain location information. BRIEF mode is synchronized and does not contain"
+                    + " location information. ASYNC mode is asynchronous and does not contain location information."
+                    + " The performance of the three log output modes increases in sequence"},
+            options = {"NORMAL", "BRIEF", "ASYNC"})
+    public static String sys_log_mode = "NORMAL";
+
     @ConfField(description = {"FE 日志文件的最大数量。超过这个数量后，最老的日志文件会被删除",
             "The maximum number of FE log files. After exceeding this number, the oldest log file will be deleted"})
     public static int sys_log_roll_num = 10;