Pongo checks extended with additional /graphql

• Added support for /graphql API checks for Pongo pages

Switched TLS backend back to SSL

Switched the "mesalink feature to "ssl" for curl.

Krecik 1.0.1

Changes:

• Replaced log + fern with the tracing crate.
• Implemented signal handler SIGUSR1 that will switch the krecikd log level on the fly.
• No more log management in Krecik.
• Code cleanup

Pure Rust TLS for Curl

Since this release, Krecik uses Mesalink as the default TLS engine for the Curl library.