Remove MLIB from PP header

[jeronstone]

• Changes policy rule description to a dynamically-allocated string rather than a string_t
• Removes policy provider struct "name" field since it was hardly utilized, and PP ID gives unique identifier.

Closes #116

[jeronstone]

Quality Gate failed

Failed conditions 1 Security Hotspot

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I believe this is safe since the N is limited by strnlen

[BrianSipos]

With additional docs this is a helpful API simplification.

[BrianSipos]

I hate to dwell on this but can you produce a simple unit test function to exercise what happens when the input text exceeds the limit? Just to verify it stops on the right char and still gets null terminator. Then we can ack the sonar complaint and be all green.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
90.9% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud