feat(frontends/lean/parser): propagate position information to expressions created by macro implemented in Lua
feat(frontends/lean/parser): propagate position information to expressions created by macro implemented in Lua

Signed-off-by: Leonardo de Moura <7610bae85f2b530654cc716772f1fe653373e892@microsoft.com>

Kha/lean,soonhokong/travis_test,leodemoura/lean,dselsam/lean,soonhokong/lean-osx,c-cube/lean,Kha/lean,sp3ctum/lean,javra/lean,codyroux/lean0.1,levnach/lean,fpvandoorn/lean2,leodemoura/lean,soonhokong/lean-osx,c-cube/lean,dselsam/lean,soonhokong/lean-windows,fgdorais/lean,soonhokong/lean-windows,c-cube/lean,leodemoura/lean,rlewis1988/lean,leanprover-community/lean,avigad/lean,leanprover-community/lean,leodemoura/lean,fpvandoorn/lean2,digama0/lean,fgdorais/lean,javra/lean,soonhokong/lean,htzh/lean,UlrikBuchholtz/lean,levnach/lean,leanprover-community/lean,fpvandoorn/lean2,javra/lean,sp3ctum/lean,soonhokong/lean-windows,fpvandoorn/lean,leanprover-community/lean,UlrikBuchholtz/lean,rlewis1988/lean,digama0/lean,soonhokong/lean,fpvandoorn/lean,eigengrau/lean,eigengrau/lean,fgdorais/lean,avigad/lean,eigengrau/lean,fgdorais/lean,Kha/lean,rlewis1988/lean,digama0/lean,soonhokong/lean,dselsam/lean,soonhokong/lean-osx,digama0/lean,Kha/lean,levnach/lean,rlewis1988/lean,javra/lean,leanprover/lean,fpvandoorn/lean2,fpvandoorn/lean,leodemoura/lean,sp3ctum/lean,codyroux/lean0.1,fgdorais/lean,rlewis1988/lean,levnach/lean,htzh/lean,soonhokong/lean-windows,soonhokong/lean-osx,fpvandoorn/lean2,leanprover-community/lean,soonhokong/lean,leanprover/lean,leanprover/lean,johoelzl/lean,dselsam/lean,soonhokong/travis_test,dselsam/lean,sp3ctum/lean,digama0/lean,digama0/lean,c-cube/lean,fpvandoorn/lean,leanprover/lean,fpvandoorn/lean,javra/lean,johoelzl/lean,htzh/lean,johoelzl/lean,avigad/lean,rlewis1988/lean,soonhokong/lean,leodemoura/lean,leanprover/lean,htzh/lean,johoelzl/lean,fpvandoorn/lean,UlrikBuchholtz/lean,eigengrau/lean,htzh/lean,UlrikBuchholtz/lean,Kha/lean,johoelzl/lean,soonhokong/lean-osx,avigad/lean,eigengrau/lean,soonhokong/travis_test,leanprover/lean,dselsam/lean,fgdorais/lean,Kha/lean,c-cube/lean,soonhokong/travis_test,codyroux/lean0.1,soonhokong/lean-windows,UlrikBuchholtz/lean,avigad/lean,codyroux/lean0.1,leanprover-community/lean,johoelzl/lean,sp3ctum/lean,levnach/lean,avigad/lean