[feature] User muting (#2960)

* User muting

* Address review feedback

* Rename uniqueness constraint on user_mutes to match convention

* Remove unused account_id from where clause

* Add UserMute to NewTestDB

* Update test/envparsing.sh with new and fixed cache stuff

* Address tobi's review comments

* Make compiledUserMuteListEntry.expired consistent with UserMute.Expired

* Make sure mute_expires_at is serialized as an explicit null for indefinite mutes

---------

Co-authored-by: tobi <tobi.smethurst@protonmail.com>

internal/api/model/usermute.go

@@ -0,0 +1,34 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package model
+
+// UserMuteCreateUpdateRequest captures params for creating or updating a user mute.
+//
+// swagger:ignore
+type UserMuteCreateUpdateRequest struct {
+	// Should the mute apply to notifications from that user?
+	//
+	// Example: true
+	Notifications *bool `form:"notifications" json:"notifications" xml:"notifications"`
+	// Number of seconds from now that the mute should expire. If omitted or 0, mute never expires.
+	Duration *int `json:"-" form:"duration" xml:"duration"`
+	// Number of seconds from now that the mute should expire. If omitted or 0, mute never expires.
+	//
+	// Example: 86400
+	DurationI interface{} `json:"duration"`
+}