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/logging/src/macros.rs

@@ -0,0 +1,6 @@
+#[macro_export]
+macro_rules! crit {
+    ($($arg:tt)*) => {
+        tracing::error!(error_type = "crit",  $($arg)*);
+    };
+}