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/compliance.go

@@ -0,0 +1,125 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package model
+
+import (
+	"net/http"
+	"strings"
+)
+
+const (
+	ComplianceStatusCreated  = "created"
+	ComplianceStatusRunning  = "running"
+	ComplianceStatusFinished = "finished"
+	ComplianceStatusFailed   = "failed"
+	ComplianceStatusRemoved  = "removed"
+
+	ComplianceTypeDaily = "daily"
+	ComplianceTypeAdhoc = "adhoc"
+)
+
+type Compliance struct {
+	Id       string `json:"id"`
+	CreateAt int64  `json:"create_at"`
+	UserId   string `json:"user_id"`
+	Status   string `json:"status"`
+	Count    int    `json:"count"`
+	Desc     string `json:"desc"`
+	Type     string `json:"type"`
+	StartAt  int64  `json:"start_at"`
+	EndAt    int64  `json:"end_at"`
+	Keywords string `json:"keywords"`
+	Emails   string `json:"emails"`
+}
+
+func (c *Compliance) Auditable() map[string]interface{} {
+	return map[string]interface{}{
+		"id":        c.Id,
+		"create_at": c.CreateAt,
+		"user_id":   c.UserId,
+		"status":    c.Status,
+		"count":     c.Count,
+		"desc":      c.Desc,
+		"type":      c.Type,
+		"start_at":  c.StartAt,
+		"end_at":    c.EndAt,
+		"keywords":  c.Keywords,
+		"emails":    c.Emails,
+	}
+}
+
+type Compliances []Compliance
+
+// ComplianceExportCursor is used for paginated iteration of posts
+// for compliance export.
+// We need to keep track of the last post ID in addition to the last post
+// CreateAt to break ties when two posts have the same CreateAt.
+type ComplianceExportCursor struct {
+	LastChannelsQueryPostCreateAt       int64
+	LastChannelsQueryPostID             string
+	ChannelsQueryCompleted              bool
+	LastDirectMessagesQueryPostCreateAt int64
+	LastDirectMessagesQueryPostID       string
+	DirectMessagesQueryCompleted        bool
+}
+
+func (c *Compliance) PreSave() {
+	if c.Id == "" {
+		c.Id = NewId()
+	}
+
+	if c.Status == "" {
+		c.Status = ComplianceStatusCreated
+	}
+
+	c.Count = 0
+	c.Emails = NormalizeEmail(c.Emails)
+	c.Keywords = strings.ToLower(c.Keywords)
+
+	c.CreateAt = GetMillis()
+}
+
+func (c *Compliance) DeepCopy() *Compliance {
+	copy := *c
+	return &copy
+}
+
+func (c *Compliance) JobName() string {
+	jobName := c.Type
+	if c.Type == ComplianceTypeDaily {
+		jobName += "-" + c.Desc
+	}
+
+	jobName += "-" + c.Id
+
+	return jobName
+}
+
+func (c *Compliance) IsValid() *AppError {
+	if !IsValidId(c.Id) {
+		return NewAppError("Compliance.IsValid", "model.compliance.is_valid.id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if c.CreateAt == 0 {
+		return NewAppError("Compliance.IsValid", "model.compliance.is_valid.create_at.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(c.Desc) > 512 || c.Desc == "" {
+		return NewAppError("Compliance.IsValid", "model.compliance.is_valid.desc.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if c.StartAt == 0 {
+		return NewAppError("Compliance.IsValid", "model.compliance.is_valid.start_at.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if c.EndAt == 0 {
+		return NewAppError("Compliance.IsValid", "model.compliance.is_valid.end_at.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if c.EndAt <= c.StartAt {
+		return NewAppError("Compliance.IsValid", "model.compliance.is_valid.start_end_at.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	return nil
+}