Reworks the graphics of the NFC-Tag reading process of spool and location tags. Introduces progress bar for reading process. Also first re-work of the spoolman availability (not fixed completly yet). Also fixes an issue where the API request to spoolman and octoprint was sent in parallel. This now happens sequentially to reduce heap load.
Fixes multiple potential memory leaks in API and NFC. Also fixes an issue in the new locaiton tag feature that could lead to multiple parallel API requests. This could cause memory leak issues but also result in wrong weights being registered for a spool.
