Add router module to Vega upgrade

[jackzampolin]

No description provided.

[yaruwangway]

Hi Jack, it is great that we can include router module to gaia vega-rc2 release!
Please confirm if the following code change need to be added:

• add routertypes.ModuleName in app.mm.SetOrderBeginBlockers and app.mm.SetOrderInitGenesis
• add fromVM[routertypes.ModuleName] = 0 if the router module do not want to skip init genesis. like this:

  gaia/app/app.go

  Line 565 in 06d6f8f

  fromVM[authz.ModuleName] = 0

• add the router module store in the store upgrade. like here:

  gaia/app/app.go

  Line 579 in 06d6f8f

  Added: []string{authz.ModuleName, feegrant.ModuleName},

[yaruwangway]

no need to write "router" if the alias is the same name as the package

[alexanderbez]

This needs to go into main then backported into the release branch. Otherwise, LGTM.

[jackzampolin]

Ok so this is good, but I just want to make sure to test the e2e with this build. Should have this done by eow

[jackzampolin]

Will rebase against main

[okwme]

this work was cherry-picked by @yaruwangway and added to the vega-rc2 branch as part of #979. Going to close this PR unless there's another reason to keep it open.