[config/configtls] Migrate TLS core types to schema-based configuration generated by mdatagen.

[jkoronaAtCisco]

Description

Migrate config/configtls to mdatagen schema-based configuration. Removes the hand-written configuration structs and default constructors in favor of generated code driven by metadata.yaml.

Authorship

• I, a human, wrote this pull request description myself.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.07%. Comparing base (0ffbf34) to head (53c8907).
⚠️ Report is 8 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #15693   +/-   ##
=======================================
  Coverage   91.07%   91.07%           
=======================================
  Files         730      731    +1     
  Lines       48499    48499           
=======================================
  Hits        44169    44169           
  Misses       3011     3011           
  Partials     1319     1319           

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