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/model/command_args.go

@@ -0,0 +1,55 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package model
+
+import (
+	"github.com/mattermost/mattermost-server/server/v8/platform/shared/i18n"
+)
+
+type CommandArgs struct {
+	UserId          string             `json:"user_id"`
+	ChannelId       string             `json:"channel_id"`
+	TeamId          string             `json:"team_id"`
+	RootId          string             `json:"root_id"`
+	ParentId        string             `json:"parent_id"`
+	TriggerId       string             `json:"trigger_id,omitempty"`
+	Command         string             `json:"command"`
+	SiteURL         string             `json:"-"`
+	T               i18n.TranslateFunc `json:"-"`
+	UserMentions    UserMentionMap     `json:"-"`
+	ChannelMentions ChannelMentionMap  `json:"-"`
+}
+
+func (o *CommandArgs) Auditable() map[string]interface{} {
+	return map[string]interface{}{
+		"user_id":    o.UserId,
+		"channel_id": o.ChannelId,
+		"team_id":    o.TeamId,
+		"root_id":    o.RootId,
+		"parent_id":  o.ParentId,
+		"trigger_id": o.TriggerId,
+		"command":    o.Command,
+		"site_url":   o.SiteURL,
+	}
+}
+
+// AddUserMention adds or overrides an entry in UserMentions with name username
+// and identifier userId
+func (o *CommandArgs) AddUserMention(username, userId string) {
+	if o.UserMentions == nil {
+		o.UserMentions = make(UserMentionMap)
+	}
+
+	o.UserMentions[username] = userId
+}
+
+// AddChannelMention adds or overrides an entry in ChannelMentions with name
+// channelName and identifier channelId
+func (o *CommandArgs) AddChannelMention(channelName, channelId string) {
+	if o.ChannelMentions == nil {
+		o.ChannelMentions = make(ChannelMentionMap)
+	}
+
+	o.ChannelMentions[channelName] = channelId
+}