espalarm Code

More integration of the Q&D port of LightFTP

Some cleanup, and remove another thread so the FTP server just runs in one thread.

Make FTP server configurable

Hook up the ftp server.
This allows quick and dirty access by commands such as
ncftpget -u danny -p yow 192.168.x.y /tmp /spiffs/trust-client2.crt
ncftpput -u danny -p yow 192.168.x.y /spiffs rpi4-eeprom

My quick port of the LightFTP (avoid threads for everything, avoid gnutls, cope with no directories on SPIFFS, ..)

Add original source from LightFTP (https://github.com/hfiref0x/LightFTP)

work in progress

Save some work that happened outside this stream.
Need to reintegrate with the tree after this commit.

This version gets past invalid formats, still gets "malformed" but now with a detail :
"type": "urn:ietf:params:acme:error:malformed",
"detail": "signature type 'ES256' in JWS header is not supported, expected one of RS256, ES256, ES384 or ES512",

This looks silly, doesn't it :-)

Work in progress