Replace Echo logger with slog. (#67)

* Replace Echo logger with slog.

pkg/log/log.go

@@ -0,0 +1,22 @@
+package log
+
+import (
+	"log/slog"
+
+	"github.com/labstack/echo/v4"
+	"github.com/mikestefanello/pagoda/pkg/context"
+)
+
+// Set sets a logger in the context
+func Set(ctx echo.Context, logger *slog.Logger) {
+	ctx.Set(context.LoggerKey, logger)
+}
+
+// Ctx returns the logger stored in context, or provides the default logger if one is not present
+func Ctx(ctx echo.Context) *slog.Logger {
+	if l, ok := ctx.Get(context.LoggerKey).(*slog.Logger); ok {
+		return l
+	}
+
+	return slog.Default()
+}