Use `slog.Logger` across components

[ritvikos]

Overview

Add a pluggable logging interface with slog.Logger for components. This would add more control over component-level logging, irrespective of the global logger. (passed via higher-level abstraction)

Scope

Remove existing fmt statements. Accept *slog.Logger for each component with precedence order that prioritizes component-specific logging configuration over global one, update constructors, and use within the code wherever applicable.