ci: add a new parallel job to build haddocks, to save CI time

GitOrigin-RevId: ad8bb107a962435808e8c638459a320b48531343

cabal.project.ci-haddock

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+cabal.project

cabal.project.ci-haddock.freeze

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+cabal.project.freeze

cabal.project.ci-haddock.local

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+-- This configuration is just for building haddocks in CI. `cabal haddock` requires
+-- the project to be built. We can do that at the end of the build job, but that
+-- adds ~7min wall clock time to CI, since haddock is extremely slow.
+--     Instead we make this a parallel job, but use a configuration with optimizations
+-- off so the haskell build will be relatively fast.
+
+-- NOTE!: we want to make sure this matches cabal.project.ci.local, so we can re-use the
+-- cached library dependencies and don't accidentally rebuild:
+package *
+  ghc-options:
+    -j2
+    +RTS -M15000m -RTS
+    +RTS -A64m -n2m -RTS
+
+-- Disable optimizations
+flags: -optimize-hasura
+
+package graphql-engine
+  ghc-options:
+    -- At this point though we definitely want full module-level parallelism:
+    -j
+    -Werror
+  -- For speed; see `cabal.project.dev-sh.local`:
+  executable-dynamic: True
+  library-vanilla: False
+
+-- %%%-BEGIN-PRO-ONLY-CONTENT-%%%
+
+package graphql-engine-pro
+  ghc-options:
+    -- At this point though we definitely want full module-level parallelism:
+    -j
+    -Werror
+  -- For speed; see `cabal.project.dev-sh.local`:
+  executable-dynamic: True
+  library-vanilla: False