Endpoint refactor, ID in errors, update Sanic

[ysfchn]

• Listing firmwares now return some information such as bootloader version, minor and major iteration and build date which is parsed from firmware string.
• Updated Sanic to 21.12.1
• Error messages now include an ID instead of just a message.
• Renamed endpoints for consistency with other endpoints.
• Added /firmware/:region/:model/latest endpoint that gets the latest firmware version and redirects to its firmware information endpoint.
• Removed the /:region/:model endpoint. For direct downloads, use /firmware/:region/:model/latest?download=1 (for latest version) or /firmware/:region/:model/:firmware?download=1 (for specific version)
• Removed CSC list, if anyone needs this functionality, they can copy the CSC dictionary to their code.