[feature] Allow users to export data via the settings panel (#3140)

* [feature] Allow users to export data via the settings panel

* rename/move some stuff

internal/api/model/exportimport.go

@@ -0,0 +1,60 @@
+// 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
+
+// AccountExportStats models an account's stats
+// specifically for the purpose of informing about
+// export sizes at the /api/v1/exports/stats endpoint.
+//
+// swagger:model accountExportStats
+type AccountExportStats struct {
+	// TODO: String representation of media storage size attributed to this account.
+	//
+	// example: 500MB
+	MediaStorage string `json:"media_storage"`
+
+	// Number of accounts following this account.
+	//
+	// example: 50
+	FollowersCount int `json:"followers_count"`
+
+	// Number of accounts followed by this account.
+	//
+	// example: 50
+	FollowingCount int `json:"following_count"`
+
+	// Number of statuses created by this account.
+	//
+	// example: 81986
+	StatusesCount int `json:"statuses_count"`
+
+	// Number of lists created by this account.
+	//
+	// example: 10
+	ListsCount int `json:"lists_count"`
+
+	// Number of accounts blocked by this account.
+	//
+	// example: 15
+	BlocksCount int `json:"blocks_count"`
+
+	// Number of accounts muted by this account.
+	//
+	// example: 11
+	MutesCount int `json:"mutes_count"`
+}