[WIP] UnresolvedPkgLoc refactor

cabal-install/Distribution/Client/Configure.hs

cabal-install/Distribution/Client/Dependency.hs

cabal-install/Distribution/Client/Fetch.hs

cabal-install/Distribution/Client/FetchUtils.hs

cabal-install/Distribution/Client/Freeze.hs

cabal-install/Distribution/Client/Get.hs

cabal-install/Distribution/Client/IndexUtils.hs

cabal-install/Distribution/Client/InstallPlan.hs

cabal-install/Distribution/Client/List.hs

cabal-install/Distribution/Client/Outdated.hs

cabal-install/Distribution/Client/ProjectConfig.hs

cabal-install/Distribution/Client/ProjectOrchestration.hs

cabal-install/Distribution/Client/ProjectPlanOutput.hs

cabal-install/Distribution/Client/ProjectPlanning.hs

cabal-install/Distribution/Client/ProjectPlanning/Types.hs

cabal-install/Distribution/Client/SolverInstallPlan.hs

cabal-install/Distribution/Client/Targets.hs

cabal-install/Distribution/Client/Types.hs