v8.0 module release (#22975)

https://mattermost.atlassian.net/browse/MM-52079

```release-note
We upgrade the module version to 8.0. The new module path is github.com/mattermost-server/server/v8.
```


Co-authored-by: Doug Lauder <wiggin77@warpmail.net>

server/platform/shared/driver/conn.go

@@ -7,7 +7,7 @@ import (
 	"context"
 	"database/sql/driver"
 
-	"github.com/mattermost/mattermost-server/v6/plugin"
+	"github.com/mattermost/mattermost-server/server/v8/plugin"
 )
 
 // Conn is a DB driver conn implementation

server/platform/shared/driver/driver.go

@@ -12,7 +12,7 @@ import (
 	"context"
 	"database/sql/driver"
 
-	"github.com/mattermost/mattermost-server/v6/plugin"
+	"github.com/mattermost/mattermost-server/server/v8/plugin"
 )
 
 var (

server/platform/shared/driver/objects.go

@@ -7,7 +7,7 @@ import (
 	"context"
 	"database/sql/driver"
 
-	"github.com/mattermost/mattermost-server/v6/plugin"
+	"github.com/mattermost/mattermost-server/server/v8/plugin"
 )
 
 type wrapperTx struct {

server/platform/shared/filestore/filesstore_test.go

@@ -18,7 +18,7 @@ import (
 	"github.com/stretchr/testify/suite"
 	"github.com/xtgo/uuid"
 
-	"github.com/mattermost/mattermost-server/v6/server/platform/shared/mlog"
+	"github.com/mattermost/mattermost-server/server/v8/platform/shared/mlog"
 )
 
 func randomString() string {

server/platform/shared/filestore/localstore.go

@@ -12,7 +12,7 @@ import (
 
 	"github.com/pkg/errors"
 
-	"github.com/mattermost/mattermost-server/v6/server/platform/shared/mlog"
+	"github.com/mattermost/mattermost-server/server/v8/platform/shared/mlog"
 )
 
 const (

server/platform/shared/filestore/mocks/FileBackend.go

@@ -7,7 +7,7 @@ package mocks
 import (
 	io "io"
 
-	filestore "github.com/mattermost/mattermost-server/v6/server/platform/shared/filestore"
+	filestore "github.com/mattermost/mattermost-server/server/v8/platform/shared/filestore"
 
 	mock "github.com/stretchr/testify/mock"
 

server/platform/shared/filestore/s3store.go

@@ -19,7 +19,7 @@ import (
 	"github.com/minio/minio-go/v7/pkg/encrypt"
 	"github.com/pkg/errors"
 
-	"github.com/mattermost/mattermost-server/v6/server/platform/shared/mlog"
+	"github.com/mattermost/mattermost-server/server/v8/platform/shared/mlog"
 )
 
 // S3FileBackend contains all necessary information to communicate with

server/platform/shared/i18n/i18n.go

@@ -15,7 +15,7 @@ import (
 	"github.com/mattermost/go-i18n/i18n"
 	"github.com/mattermost/go-i18n/i18n/bundle"
 
-	"github.com/mattermost/mattermost-server/v6/server/platform/shared/mlog"
+	"github.com/mattermost/mattermost-server/server/v8/platform/shared/mlog"
 )
 
 const defaultLocale = "en"

server/platform/shared/mail/mail.go

@@ -18,8 +18,8 @@ import (
 	"github.com/pkg/errors"
 	gomail "gopkg.in/mail.v2"
 
-	"github.com/mattermost/mattermost-server/v6/model"
-	"github.com/mattermost/mattermost-server/v6/server/platform/shared/mlog"
+	"github.com/mattermost/mattermost-server/server/v8/model"
+	"github.com/mattermost/mattermost-server/server/v8/platform/shared/mlog"
 )
 
 const (

server/platform/shared/mfa/mfa_test.go

@@ -15,8 +15,8 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
-	"github.com/mattermost/mattermost-server/v6/plugin/plugintest/mock"
-	"github.com/mattermost/mattermost-server/v6/server/channels/store/storetest/mocks"
+	"github.com/mattermost/mattermost-server/server/v8/channels/store/storetest/mocks"
+	"github.com/mattermost/mattermost-server/server/v8/plugin/plugintest/mock"
 )
 
 func TestGenerateSecret(t *testing.T) {

server/platform/shared/mlog/global_test.go

@@ -14,7 +14,7 @@ import (
 
 	"github.com/stretchr/testify/require"
 
-	"github.com/mattermost/mattermost-server/v6/server/platform/shared/mlog"
+	"github.com/mattermost/mattermost-server/server/v8/platform/shared/mlog"
 )
 
 func TestLoggingBeforeInitialized(t *testing.T) {

server/platform/shared/templates/templates.go

@@ -13,7 +13,7 @@ import (
 
 	"github.com/fsnotify/fsnotify"
 
-	"github.com/mattermost/mattermost-server/v6/server/channels/utils/fileutils"
+	"github.com/mattermost/mattermost-server/server/v8/channels/utils/fileutils"
 )
 
 // Container represents a set of templates that can be render