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

common/account_utils/Cargo.toml

@@ -14,7 +14,7 @@ regex = { workspace = true }
 rpassword = "5.0.0"
 serde = { workspace = true }
 serde_yaml = { workspace = true }
-slog = { workspace = true }
+tracing = { workspace = true }
 types = { workspace = true }
 validator_dir = { workspace = true }
 zeroize = { workspace = true }

common/account_utils/src/validator_definitions.rs

@@ -7,11 +7,11 @@ use crate::{default_keystore_password_path, read_password_string, write_file_via
 use eth2_keystore::Keystore;
 use regex::Regex;
 use serde::{Deserialize, Serialize};
-use slog::{error, Logger};
 use std::collections::HashSet;
 use std::fs::{self, create_dir_all, File};
 use std::io;
 use std::path::{Path, PathBuf};
+use tracing::error;
 use types::{graffiti::GraffitiString, Address, PublicKey};
 use validator_dir::VOTING_KEYSTORE_FILE;
 use zeroize::Zeroizing;
@@ -266,7 +266,6 @@ impl ValidatorDefinitions {
         &mut self,
         validators_dir: P,
         secrets_dir: P,
-        log: &Logger,
     ) -> Result<usize, Error> {
         let mut keystore_paths = vec![];
         recursively_find_voting_keystores(validators_dir, &mut keystore_paths)
@@ -311,10 +310,9 @@ impl ValidatorDefinitions {
                     Ok(keystore) => keystore,
                     Err(e) => {
                         error!(
-                            log,
-                            "Unable to read validator keystore";
-                            "error" => e,
-                            "keystore" => format!("{:?}", voting_keystore_path)
+                            error = ?e,
+                            keystore = ?voting_keystore_path,
+                            "Unable to read validator keystore"
                         );
                         return None;
                     }
@@ -336,9 +334,8 @@ impl ValidatorDefinitions {
                     }
                     None => {
                         error!(
-                            log,
-                            "Invalid keystore public key";
-                            "keystore" => format!("{:?}", voting_keystore_path)
+                            keystore = ?voting_keystore_path,
+                            "Invalid keystore public key"
                         );
                         return None;
                     }