Renamed settings table keys (#11946)

refs https://github.com/TryGhost/Ghost/issues/10318

- Adds following renames to settings table keys:
  'default_locale' -> 'lang'
  'active_timezone' -> 'timezone'
  'ghost_head' -> 'codeinjection_head'
  'ghost_foot' -> 'codeinjection_foot'
  'brand.publicationColor' -> 'accent_color'
- The renames are done to match revised naming conventions and naming
exposed through APIs

core/server/data/migrations/versions/3.22/02-settings-key-renames.js

@@ -0,0 +1,81 @@
+const logging = require('../../../../../shared/logging');
+
+const renameMapping = [{
+    from: 'default_locale',
+    to: 'lang'
+}, {
+    from: 'active_timezone',
+    to: 'timezone'
+}, {
+    from: 'ghost_head',
+    to: 'codeinjection_head'
+}, {
+    from: 'ghost_foot',
+    to: 'codeinjection_foot'
+}];
+
+module.exports = {
+    config: {
+        transaction: true
+    },
+
+    async up(options) {
+        await Promise.map(renameMapping, async (renameMap) => {
+            logging.info(`Renaming ${renameMap.from} to ${renameMap.to}`);
+
+            return await options
+                .transacting('settings')
+                .where('key', renameMap.from)
+                .update({
+                    key: renameMap.to
+                });
+        });
+
+        const brandResult = await options
+            .transacting('settings')
+            .where('key', 'brand')
+            .select('value');
+
+        const brand = JSON.parse(brandResult[0].value);
+
+        logging.info(`Updating brand.primaryColor in settings to accent_color with value ${brand.primaryColor}`);
+
+        return await options
+            .transacting('settings')
+            .where('key', 'brand')
+            .update('key', 'accent_color')
+            .update('value', brand.primaryColor);
+    },
+
+    async down(options) {
+        await Promise.map(renameMapping, async (renameMap) => {
+            logging.info(`Renaming ${renameMap.to} to ${renameMap.from}`);
+
+            return await options
+                .transacting('settings')
+                .where('key', renameMap.to)
+                .update({
+                    key: renameMap.from
+                });
+        });
+
+        let accentColor = await options
+            .transacting('settings')
+            .where('key', 'accent_color')
+            .select('value');
+
+        const brand = accentColor[0].value;
+
+        logging.info(`Updating accent_color in settings to brand.primaryColor with value ${brand.primaryColor}`);
+
+        return await options
+            .transacting('settings')
+            .where('key', 'accent_color')
+            .update('key', 'brand')
+            .update('value', JSON.stringify({
+                brand: {
+                    primaryColor: ''
+                }
+            }));
+    }
+};