Address diagnostics

[Anilm3]

This PR introduces information regarding addresses to the diagnostics for each of the different features. This includes both required and optional addresses, for example:

  "processors": {
    "loaded": [
      "processor-001"
    ],
    "failed": [],
    "errors": {},
    "addresses": {
      "required": [ ... ],
      "optional": [ ... ]
    }
  },

This allows the WAF user to distinguish which addresses they actually need to provide (required) from those which are opportunistically used (optionals) . It also allows distinguishing addresses which are used in potentially disabled features, for example, the processors section would provide insights into the addresses used for schema extraction:

• Required refers to the condition addresses.
• Optional refers to the mappings used to generate schemas, these are not "required" to run the processor but if available they will be used.

Unfortunately, it's not possible to distinguish which addresses correspond to the schema extraction processor, although if more processors are included in the future, this might be required.

Finally, this PR also renames ddwaf_required_addresses to ddwaf_known_addresses to better reflect the actual contents. This function now also returns optional addresses (processor mappings, object filter addresses) and required addresses (mainly condition addresses).

Related Jira APPSEC-11125

[codecov-commenter]

Codecov Report

Merging #221 (d967638) into master (0559fc0) will increase coverage by 0.00%.
The diff coverage is 84.70%.

@@           Coverage Diff           @@
##           master     #221   +/-   ##
=======================================
  Coverage   82.56%   82.57%           
=======================================
  Files         106      106           
  Lines        4004     4069   +65     
  Branches     1823     1859   +36     
=======================================
+ Hits         3306     3360   +54     
+ Misses        279      277    -2     
- Partials      419      432   +13     

Flag	Coverage Δ
waf_test_none	82.46% <84.70%> (+0.01%)	⬆️
waf_test_sse2	82.54% <84.70%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
src/interface.cpp	64.70% <100.00%> (ø)
src/processor.hpp	100.00% <100.00%> (ø)
src/ruleset_builder.cpp	80.64% <100.00%> (-0.18%)	⬇️
src/ruleset_builder.hpp	100.00% <ø> (ø)
src/parser/parser_v2.cpp	87.45% <96.77%> (+0.58%)	⬆️
src/ruleset_info.cpp	97.22% <92.85%> (-2.78%)	⬇️
src/ruleset.hpp	66.66% <72.22%> (+2.56%)	⬆️
src/ruleset_info.hpp	73.97% <60.00%> (-3.62%)	⬇️

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[Taiki-San]

lgtm!