[feature/frogend] (Mastodon) domain block CSV import (#1390)

* checkbox-list styling with taller <p> element

* CSV import/export, UI/UX improvements to import-export interface

* minor styling tweaks

* csv export, clean up export type branching

* abstract domain block entry validation

* foundation for PSL check + suggestions

* Squashed commit of the following:

commit e3655ba4fb
Author: f0x <f0x@cthu.lu>
Date:   Tue Jan 31 15:19:10 2023 +0100

    let debug depend on env (prod/debug) again

commit 79c792b832
Author: f0x <f0x@cthu.lu>
Date:   Tue Jan 31 00:34:01 2023 +0100

    update checklist components

commit 4367960fe4
Author: f0x <f0x@cthu.lu>
Date:   Mon Jan 30 23:46:20 2023 +0100

    checklist performance improvements

commit 204a4c02d1
Author: f0x <f0x@cthu.lu>
Date:   Mon Jan 30 20:05:34 2023 +0100

    checklist field: use reducer for state

* remove debug logging

* show and use domain block suggestion

* restructure import/export buttons

* updating suggestions

* suggestion overview

* restructure check-list behavior, domain import/export

web/source/settings/admin/federation/import-export/index.jsx

@@ -0,0 +1,78 @@
+/*
+	GoToSocial
+	Copyright (C) 2021-2023 GoToSocial Authors admin@gotosocial.org
+
+	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/>.
+*/
+
+"use strict";
+
+const React = require("react");
+const { Switch, Route, Redirect, useLocation } = require("wouter");
+
+const query = require("../../../lib/query");
+
+const {
+	useTextInput,
+} = require("../../../lib/form");
+
+const useFormSubmit = require("../../../lib/form/submit");
+
+const ProcessImport = require("./process");
+const ImportExportForm = require("./form");
+
+const baseUrl = "/settings/admin/federation/import-export";
+
+module.exports = function ImportExport() {
+	const form = {
+		domains: useTextInput("domains"),
+		exportType: useTextInput("exportType", { defaultValue: "plain", dontReset: true })
+	};
+
+	const [submitParse, parseResult] = useFormSubmit(form, query.useProcessDomainListMutation());
+
+	const [_location, setLocation] = useLocation();
+
+	return (
+		<Switch>
+			<Route path={`${baseUrl}/process`}>
+				{parseResult.isSuccess ? (
+					<>
+						<h1>
+							<span className="button" onClick={() => {
+								parseResult.reset();
+								setLocation(baseUrl);
+							}}>
+								&lt; back
+							</span> Confirm import:
+						</h1>
+						<ProcessImport
+							list={parseResult.data}
+						/>
+					</>
+				) : <Redirect to={baseUrl} />}
+			</Route>
+
+			<Route>
+				{!parseResult.isSuccess ? (
+					<ImportExportForm
+						form={form}
+						submitParse={submitParse}
+						parseResult={parseResult}
+					/>
+				) : <Redirect to={`${baseUrl}/process`} />}
+			</Route>
+		</Switch>
+	);
+};