feat: allow reloading tracing filter over http

[de-sh]

Closes #

Changes

Why?

Trials Performed

Locally, with CURL:

curl -X POST -H "Content-Type: text/plain" -d "uplink=debug,rumqtt=debug" http://localhost:3333

Problems noted during testing:

• When uplink is started with the argument -vv for log level DEBUG and we try to increase to the TRACE level with the reload http request for the same, logs falter and don't work as expected.