[WIP] [MM-55031] OAuth Outgoing Connection App integration (#25379)

* OAuthOutgoingConnection model

* added store

* make generated

* add missing license headers

* fix receiver name

* i18n

* i18n sorting

* update migrations from master

* make migrations-extract

* update retrylayer tests

* replaced sql query with id pagination

* fixed flaky tests

* missing columns

* missing columns on save/update

* typo

* improved tests

* remove enum from mysql colum

* add password credentials to store

* license changes

* OAuthOutgoingConnectionInterface

* Oauth -> OAuth

* make generated

* merge migrations

* renamed migrations

* model change suggestions

* refactor test functionsn

* migration typo

* refactor store table names

* updated sanitize test

* cleanup merge

* refactor symbol

* list endpoint

* oauthoutgoingconnection -> outgoingoauthconnection

* signature change

* i18n update

* granttype typo

* naming

* api list

* uppercase typo

* i18n

* missing license header

* fixed path in comments

* updated openapi definitions

* sanitize connections

* make generated

* test license and no feature flag

* removed t.fatal

* updated testhelper calls

* yaml schema fixes

* switched interface name

* suggested translation

* missing i18n translation

* address comments

* updated i18n

server/channels/web/context.go

@@ -453,6 +453,17 @@ func (c *Context) RequireAppId() *Context {
 	return c
 }
 
+func (c *Context) RequireOutgoingOAuthConnectionId() *Context {
+	if c.Err != nil {
+		return c
+	}
+
+	if !model.IsValidId(c.Params.OutgoingOAuthConnectionID) {
+		c.SetInvalidURLParam("outgoing_oauth_connection_id")
+	}
+	return c
+}
+
 func (c *Context) RequireFileId() *Context {
 	if c.Err != nil {
 		return c

server/channels/web/params.go

@@ -93,6 +93,7 @@ type Params struct {
 	GroupSource               model.GroupSource
 	FilterHasMember           string
 	IncludeChannelMemberCount string
+	OutgoingOAuthConnectionID string
 
 	// Cloud
 	InvoiceId string
@@ -145,6 +146,7 @@ func ParamsFromRequest(r *http.Request) *Params {
 	params.GroupId = props["group_id"]
 	params.RemoteId = props["remote_id"]
 	params.InvoiceId = props["invoice_id"]
+	params.OutgoingOAuthConnectionID = props["outgoing_oauth_connection_id"]
 	params.Scope = query.Get("scope")
 
 	if val, err := strconv.Atoi(query.Get("page")); err != nil || val < 0 {