build the documentation of official packages (#20986)

* remove db stuffs

* remove punycode

* remove

* fixes script

* add cloner

* patches

* disable

* patch

* fixes external packages

* disable two packages

* preview documentation build

* try again

* fixes URL

* fixes a bug

* simplify

* fixes documentaion

* fixes

* Apply suggestions from code review

tests/effects/tstrict_funcs_imports.nim

@@ -39,11 +39,6 @@ import
   cpuload,
   critbits,
   cstrutils,
-  db_common,
-  db_mysql,
-  db_odbc,
-  db_postgres,
-  db_sqlite,
   deques,
   distros,
   dynlib,
@@ -95,7 +90,6 @@ import
   pegs,
   posix_utils,
   prelude,
-  punycode,
   random,
   rationals,
   rdstdin,