Integrate tracing (#6339)

Tracing Integration
- [reference](5bbf1859e9/projects/project-ideas.md (L297))


  - [x] replace slog & log with tracing throughout the codebase
- [x] implement custom crit log
- [x] make relevant changes in the formatter
- [x] replace sloggers
- [x] re-write SSE logging components

cc: @macladson @eserilev

lcli/src/main.rs

@@ -18,6 +18,7 @@ use parse_ssz::run_parse_ssz;
 use std::path::PathBuf;
 use std::process;
 use std::str::FromStr;
+use tracing_subscriber::filter::LevelFilter;
 use types::{EthSpec, EthSpecId};
 
 fn main() {
@@ -643,24 +644,31 @@ fn main() {
 }
 
 fn run<E: EthSpec>(env_builder: EnvironmentBuilder<E>, matches: &ArgMatches) -> Result<(), String> {
+    let (env_builder, _file_logging_layer, _stdout_logging_layer, _sse_logging_layer_opt) =
+        env_builder
+            .multi_threaded_tokio_runtime()
+            .map_err(|e| format!("should start tokio runtime: {:?}", e))?
+            .init_tracing(
+                LoggerConfig {
+                    path: None,
+                    debug_level: LevelFilter::TRACE,
+                    logfile_debug_level: LevelFilter::TRACE,
+                    log_format: None,
+                    logfile_format: None,
+                    log_color: true,
+                    logfile_color: false,
+                    disable_log_timestamp: false,
+                    max_log_size: 0,
+                    max_log_number: 0,
+                    compression: false,
+                    is_restricted: true,
+                    sse_logging: false, // No SSE Logging in LCLI
+                    extra_info: false,
+                },
+                "",
+            );
+
     let env = env_builder
-        .multi_threaded_tokio_runtime()
-        .map_err(|e| format!("should start tokio runtime: {:?}", e))?
-        .initialize_logger(LoggerConfig {
-            path: None,
-            debug_level: String::from("trace"),
-            logfile_debug_level: String::from("trace"),
-            log_format: None,
-            logfile_format: None,
-            log_color: false,
-            disable_log_timestamp: false,
-            max_log_size: 0,
-            max_log_number: 0,
-            compression: false,
-            is_restricted: true,
-            sse_logging: false, // No SSE Logging in LCLI
-        })
-        .map_err(|e| format!("should start logger: {:?}", e))?
         .build()
         .map_err(|e| format!("should build env: {:?}", e))?;