Move libs to libs/celestia-app (#1118)

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## Overview
Closes: #1119 

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## Checklist

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- [ ] New and updated code has appropriate documentation
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Author: Manav-Aggarwal

libs/appconsts/appconsts.go libs/celestia-app/appconsts/appconsts.golibs/appconsts/appconsts.go renamed to libs/celestia-app/appconsts/appconsts.go

@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"math"
 
-	"github.com/rollkit/rollkit/libs/appconsts"
+	"github.com/rollkit/rollkit/libs/celestia-app/appconsts"
 )
 
 const (

libs/appconsts/consensus_consts.go …lestia-app/appconsts/consensus_consts.golibs/appconsts/consensus_consts.go renamed to libs/celestia-app/appconsts/consensus_consts.go libs/appconsts/consensus_consts.go renamed to libs/celestia-app/appconsts/consensus_consts.go

@@ -10,9 +10,9 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
-	"github.com/rollkit/rollkit/libs/appconsts"
-	appns "github.com/rollkit/rollkit/libs/namespace"
-	"github.com/rollkit/rollkit/libs/testfactory"
+	"github.com/rollkit/rollkit/libs/celestia-app/appconsts"
+	appns "github.com/rollkit/rollkit/libs/celestia-app/namespace"
+	"github.com/rollkit/rollkit/libs/celestia-app/testfactory"
 )
 
 func SplitTxs(txs coretypes.Txs) (txShares []Share, err error) {

libs/namespace/consts.go libs/celestia-app/namespace/consts.golibs/namespace/consts.go renamed to libs/celestia-app/namespace/consts.go

@@ -3,7 +3,7 @@ package shares
 import (
 	"fmt"
 
-	"github.com/rollkit/rollkit/libs/appconsts"
+	"github.com/rollkit/rollkit/libs/celestia-app/appconsts"
 )
 
 // InfoByte is a byte with the following structure: the first 7 bits are