feat(arabot): add fibonacci sequence

src/utils/mathsSeries.ts

@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+/*
+    Animal Rights Advocates Discord Bot
+    Copyright (C) 2022  Anthony Berg
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+// Created because Stove loves Fibonacci sequences
+// A fibonacci sequence where n = 0 => 1
+export function fibonacci(position: number) {
+  let previous = 0;
+  let next = 1;
+  let tempNext;
+
+  for (let i = 0; i < position; i += 1) {
+    tempNext = next + previous;
+    previous = next;
+    next = tempNext;
+  }
+
+  return next;
+}