Move stats_change processor from ingest/ to services/horizon/internal (#5698)

* Move stats_change processor from ingest/ to services/horizon/internal

Additionally, the directories in top-level processors/ have been
renamed and the _processor has been removed from the name, since it is
redundant.
This also makes the dirname conform  with the name of the package that they house.

* reorder imports

Author: karthikiyer56

processors/account_processor/account.go processors/account/account.goprocessors/account_processor/account.go renamed to processors/account/account.go

@@ -7,7 +7,7 @@ import (
 	"github.com/guregu/null"
 	"github.com/guregu/null/zero"
 	"github.com/stellar/go/ingest"
-	utils "github.com/stellar/go/processors/processor_utils"
+	"github.com/stellar/go/processors/utils"
 	"github.com/stellar/go/xdr"
 )
 

…sors/account_processor/account_signer.go processors/account/account_signer.goprocessors/account_processor/account_signer.go renamed to processors/account/account_signer.go processors/account_processor/account_signer.go renamed to processors/account/account_signer.go

@@ -7,7 +7,7 @@ import (
 
 	"github.com/guregu/null"
 	"github.com/stellar/go/ingest"
-	utils "github.com/stellar/go/processors/processor_utils"
+	"github.com/stellar/go/processors/utils"
 	"github.com/stellar/go/xdr"
 )
 

…account_processor/account_signer_test.go processors/account/account_signer_test.goprocessors/account_processor/account_signer_test.go renamed to processors/account/account_signer_test.go processors/account_processor/account_signer_test.go renamed to processors/account/account_signer_test.go

@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"time"
 
-	utils "github.com/stellar/go/processors/processor_utils"
+	"github.com/stellar/go/processors/utils"
 	"github.com/stellar/go/toid"
 	"github.com/stellar/go/xdr"
 )

…essors/account_processor/account_test.go processors/account/account_test.goprocessors/account_processor/account_test.go renamed to processors/account/account_test.go processors/account_processor/account_test.go renamed to processors/account/account_test.go

@@ -8,7 +8,7 @@ import (
 	"github.com/stretchr/testify/assert"
 
 	"github.com/stellar/go/ingest"
-	utils "github.com/stellar/go/processors/processor_utils"
+	"github.com/stellar/go/processors/utils"
 	"github.com/stellar/go/xdr"
 )
 

processors/asset_processor/asset.go processors/asset/asset.goprocessors/asset_processor/asset.go renamed to processors/asset/asset.go

@@ -6,8 +6,8 @@ import (
 
 	"github.com/guregu/null"
 	"github.com/stellar/go/ingest"
-	asset "github.com/stellar/go/processors/asset_processor"
-	utils "github.com/stellar/go/processors/processor_utils"
+	asset "github.com/stellar/go/processors/asset"
+	"github.com/stellar/go/processors/utils"
 	"github.com/stellar/go/xdr"
 )
 

processors/asset_processor/asset_test.go processors/asset/asset_test.goprocessors/asset_processor/asset_test.go renamed to processors/asset/asset_test.go

@@ -6,7 +6,7 @@ import (
 
 	"github.com/guregu/null"
 	"github.com/stellar/go/ingest"
-	utils "github.com/stellar/go/processors/processor_utils"
+	"github.com/stellar/go/processors/utils"
 	"github.com/stellar/go/xdr"
 	"github.com/stretchr/testify/assert"
 )

…e_balance_processor/claimable_balance.go …s/claimable_balance/claimable_balance.goprocessors/claimable_balance_processor/claimable_balance.go renamed to processors/claimable_balance/claimable_balance.go processors/claimable_balance_processor/claimable_balance.go renamed to processors/claimable_balance/claimable_balance.go

@@ -6,7 +6,7 @@ import (
 	"time"
 
 	"github.com/stellar/go/ingest"
-	utils "github.com/stellar/go/processors/processor_utils"
+	"github.com/stellar/go/processors/utils"
 	"github.com/stellar/go/xdr"
 )