Added locales/context.json to help with translating

refs https://ghost.slack.com/archives/CFH10N79S/p1679491616052209?thread_ts=1679411948.063929&cid=CFH10N79S

- this adds a small script to generate a `context.json` file, which
  contains all keys and allows people to provide context on the
  translation

ghost/i18n/generate-context.js

@@ -0,0 +1,28 @@
+const fs = require('fs').promises;
+const path = require('path');
+
+const BASE_PATH = './locales/en';
+const CONTEXT_FILE = './locales/context.json';
+
+(async () => {
+    const context = require(CONTEXT_FILE);
+    const newContext = {};
+
+    const files = await fs.readdir(BASE_PATH);
+
+    for (const file of files) {
+        const filePath = path.join(process.cwd(), BASE_PATH, file);
+        const data = require(filePath);
+
+        for (const key of Object.keys(data)) {
+            newContext[key] = context[key] || '';
+        }
+    }
+
+    const orderedContext = Object.keys(newContext).sort().reduce((obj, key) => {
+        obj[key] = newContext[key];
+        return obj;
+    }, {});
+
+    await fs.writeFile(CONTEXT_FILE, JSON.stringify(orderedContext, null, 4));
+})();

ghost/i18n/locales/context.json

@@ -0,0 +1,86 @@
+{
+    "A login link has been sent to your inbox. If it doesn't arrive in 3 minutes, be sure to check your spam folder.": "",
+    "Account": "",
+    "Account settings": "",
+    "After a free trial ends, you will be charged the regular price for the tier you've chosen. You can always cancel before then.": "",
+    "All the best!": "",
+    "Already a member?": "",
+    "Back": "",
+    "Back to Log in": "",
+    "Cancel subscription": "",
+    "Cancellation reason": "",
+    "Choose a different plan": "",
+    "Choose your newsletters": "",
+    "Close": "",
+    "Comments": "",
+    "Complete your sign up to {{siteTitle}}!": "",
+    "Confirm": "",
+    "Confirm your email update for {{siteTitle}}!": "",
+    "Confirm your subscription to {{siteTitle}}": "",
+    "Continue": "",
+    "Delete account": "",
+    "Don't have an account?": "",
+    "Email": "",
+    "Email preference updated.": "",
+    "Email preferences": "",
+    "Emails": "",
+    "Emails disabled": "",
+    "For your security, the link will expire in 24 hours time.": "",
+    "Get help": "",
+    "Get notified when someone replies to your comment": "",
+    "Give feedback on this post": "",
+    "Hello": "",
+    "Hey there,": "",
+    "If you did not make this request, you can safely ignore this email.": "",
+    "If you did not make this request, you can simply delete this message.": "",
+    "Less like this": "",
+    "Manage": "",
+    "Monthly": "",
+    "More like this": "",
+    "Name": "",
+    "Not receiving emails?": "",
+    "Now check your email!": "",
+    "Please confirm your email address with this link:": "",
+    "Powered by Ghost": "",
+    "Price": "",
+    "Re-enable emails": "",
+    "Retry": "",
+    "Save": "",
+    "Secure sign in link for {{siteTitle}}": "",
+    "See you soon!": "",
+    "Sending login link...": "",
+    "Sending...": "",
+    "Sent to {{email}}": "",
+    "Sign in": "",
+    "Sign in to {{siteTitle}}": "",
+    "Sign up": "",
+    "Start {{amount}}-day free trial": "",
+    "Submit feedback": "",
+    "Successfully unsubscribed": "",
+    "Tap the link below to complete the signup process for {{siteTitle}}, and be automatically signed in:": "",
+    "Thank you for signing up to {{siteTitle}}!": "",
+    "Thank you for subscribing to {{siteTitle}}!": "",
+    "Thank you for subscribing to {{siteTitle}}. Tap the link below to be automatically signed in:": "",
+    "Thanks for the feedback!": "",
+    "That didn't go to plan": "",
+    "This email address will not be used.": "",
+    "This site is invite-only, contact the owner for access.": "",
+    "To complete signup, click the confirmation link in your inbox. If it doesn't arrive within 3 minutes, check your spam folder!": "",
+    "Unsubscribe from all emails": "",
+    "Unsubscribing from emails will not cancel your paid subscription to {{title}}": "",
+    "Update your preferences": "",
+    "We couldn't unsubscribe you as the email address was not found. Please contact the site owner.": "",
+    "Welcome back to {{siteTitle}}!": "",
+    "Welcome back! Use this link to securely sign in to your {{siteTitle}} account:": "",
+    "Yearly": "",
+    "You can also copy & paste this URL into your browser:": "",
+    "You have been successfully resubscribed": "",
+    "You will not be signed up, and no account will be created for you.": "",
+    "You will not be subscribed.": "",
+    "You're not receiving emails because you either marked a recent message as spam, or because messages could not be delivered to your provided email address.": "",
+    "You're one tap away from subscribing to {{siteTitle}} — please confirm your email address with this link:": "",
+    "Your account": "",
+    "Your input helps shape what gets published.": "",
+    "{{discount}}% discount": "",
+    "{{trialDays}} days free": ""
+}

ghost/i18n/package.json

@@ -12,7 +12,7 @@
     "lint:code": "eslint *.js lib/ --ext .js --cache",
     "lint": "yarn lint:code && yarn lint:test",
     "lint:test": "eslint -c test/.eslintrc.js test/ --ext .js --cache",
-    "translate": "yarn translate:ghost && yarn translate:portal && yarn translate:test",
+    "translate": "yarn translate:ghost && yarn translate:portal && yarn translate:test && node generate-context.js",
     "translate:ghost": "NAMESPACE=ghost i18next '../core/core/{frontend,server,shared}/**/*.{js,jsx}'",
     "translate:portal": "NAMESPACE=portal i18next '../portal/src/**/*.{js,jsx}'",
     "translate:test": "NAMESPACE=test i18next './test/**/*.js'"