Add Acholi tilde keyboard

Downstream task:
https://phabricator.wikimedia.org/T376060

rules/ach/ach-tilde.js

@@ -0,0 +1,22 @@
+( function ( $ ) {
+	'use strict';
+
+	var achTilde = {
+		id: 'ach-tilde',
+		name: 'ach-tilde',
+		description: 'Acholi tilde keyboard',
+		date: '2024-09-30',
+		URL: 'https://github.com/wikimedia/jquery.ime',
+		author: 'Amir E. Aharoni',
+		license: 'GPLv3',
+		version: '1.0',
+		patterns: [
+			[ '~N', 'Ŋ' ],
+			[ '~n', 'ŋ' ],
+			[ '~/', '\u0301' ], // Combining acute
+			[ '~\\\\', '\u0300' ] // Combining grave
+		]
+	};
+
+	$.ime.register( achTilde );
+}( jQuery ) );

src/jquery.ime.inputmethods.js

@@ -4,6 +4,10 @@
 	// All keys have quotes for consistency
 	/* eslint-disable quote-props */
 	$.extend( $.ime.sources, {
+		'ach-tilde': {
+			name: 'Acholi tilde',
+			source: 'rules/ach/ach-tilde.js'
+		},
 		'af-tilde': {
 			name: 'Afrikaans tilde',
 			source: 'rules/af/af-tilde.js'
@@ -1026,6 +1030,10 @@
 			autonym: 'Abron',
 			inputmethods: [ 'ak-qx', 'ak-tilde' ]
 		},
+		ach: {
+			autonym: 'Acoli',
+			inputmethods: [ 'ach-tilde' ]
+		},
 		ady: {
 			autonym: 'адыгэбзэ',
 			inputmethods: [ 'cyrl-palochka' ]

test/jquery.ime.test.fixtures.js

@@ -11,6 +11,13 @@ var palochkaVariants = {
 	},
 	// eslint-disable-next-line no-implicit-globals
 	testFixtures = [ // eslint-disable-line no-unused-vars
+	{
+		description: 'Acholi tilde test',
+		inputmethod: 'ach-tilde',
+		tests: [
+			{ input: '~N~na~\\e~/', output: 'Ŋŋàé', description: 'Acholi tilde Ŋŋà' }
+		]
+	},
 	{
 		description: 'Aja tilde test',
 		inputmethod: 'ajg-tilde',