Revamp the `Extending`, `Plugins`, `Architecture`, and `Programmatic configuration` pages#2716

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vy wants to merge 5 commits intomainfrom

doc/main/extending

Commits on Jul 5, 2024

Revamp the `Extending`, `Plugins`, `Architecture`, and `Programmatic configuration` pages (#2696)
vy
committed

Commits on Jul 25, 2024

Update plugin manual for 3.x plugin API
jvz
committed

Commits on Jul 26, 2024

Commits on Sep 5, 2024

Merge remote-tracking branch 'apache/main' into doc/main/extending
ppkarwasz
committed