[frontend] Custom Emoji Deletion (#994)

* re-add eslint

* fix oauth url getting too long

* actually attach single emoji get and delete routes

* basic emoji details + deletion using rtk query

* refactor emoji upload to rtk query

* clean up old redux api+reducers for custom emoji

* fix validation order

* refactor custom emoji form fields

* remove unused requires

* cleanup, fix most eslint errors

* more small eslint fixes

* fix max emoji size

* tiny bit of function documentation

web/source/settings/components/form/text.jsx

@@ -0,0 +1,56 @@
+/*
+	GoToSocial
+	Copyright (C) 2021-2022 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");
+
+module.exports = function useTextInput({name, Name}, {validator} = {}) {
+	const [text, setText] = React.useState("");
+	const textRef = React.useRef(null);
+
+	function onChange(e) {
+		let input = e.target.value;
+		setText(input);
+
+		if (validator) {
+			validator(input);
+		}
+	}
+
+	function reset() {
+		setText("");
+	}
+
+	React.useEffect(() => {
+		if (validator) {
+			textRef.current.setCustomValidity(validator(text));
+			textRef.current.reportValidity();
+		}
+	}, [text, textRef, validator]);
+
+	return [
+		onChange,
+		reset,
+		{
+			[name]: text,
+			[`${name}Ref`]: textRef,
+			[`set${Name}`]: setText
+		}
+	];
+};