Added documentation to constant files

assets/themes/Theme.js

-import React from "react";
 import { DefaultTheme } from "react-native-paper";
 
+/**
+ * Defines the overall theme of the application. See https://callstack.github.io/react-native-paper/theming.html for more documentation. 
+ */
+
 const theme = {
   ...DefaultTheme,
   roundness: 2,

constants/context.js

 import React from "react";
 
+/**
+ * Used for remembering if the user is logged in or not. It was a early way of doing it, it might be better to
+ * stick with using redux instead to handle which screens should be visible based on user status. 
+ */
+
 export const AuthContext = React.createContext();

constants/inputRequirements.js

+
+/**
+ * These constants are used for the restrictions and regexes throughout the application
+ */
+
 export const NAME_MAX_LENGTH = 40;
 export const NUMBER_MAX_LENGTH = 15;
 export const LOCATION_NUMBER_MAX_LENGTH = 4;

constants/toasts.js

-import React from 'react'
+/**
+ * This file includes various toasts the user can get. More documentation on this: https://www.npmjs.com/package/react-native-toast-message
+ */
+
 import Toast from "react-native-toast-message";
 
+/**
+ * Shows a toast/response message to the user that everything went well (statuscode 200). 
+ * 
+ * @param {String} pos - position of the toast
+ * @param {Integer} time - how long the toast should be visible
+ * @param {String} message - displays information to the user. 
+ */
 export const toastSuccess = (pos, time, message) => {
     Toast.show({
         type: "success",
@@ -11,6 +21,13 @@ export const toastSuccess = (pos, time, message) => {
       });
 }
 
+/**
+ * Shows a toast/response message to the user that something went wrong (statuscode 4XX). 
+ * 
+ * @param {String} pos - position of the toast
+ * @param {Integer} time - how long the toast should be visible
+ * @param {String} message - displays information to the user. 
+ */
 export const toastError = (pos, time, message) => {
     Toast.show({
         type: "error",
@@ -21,6 +38,13 @@ export const toastError = (pos, time, message) => {
       });
 }
 
+/**
+ * Shows a toast/response message that provides information to the user. 
+ * 
+ * @param {String} pos - position of the toast
+ * @param {Integer} time - how long the toast should be visible
+ * @param {String} message - displays information to the user. 
+ */
 export const toastInfo = (pos, time, message) => {
     Toast.show({
         type: "info",
@@ -31,6 +55,11 @@ export const toastInfo = (pos, time, message) => {
       });
 }
 
+/**
+ * Will be displayed if the server is not responding/it failed before reaching the server. 
+ * 
+ * @param {Integer} statusCode - will provide different messages based on numerous status codes. 
+ */
 export const toast500 = (statusCode) => {
 
     let errorText = "";