Moved @tryghost/adapter-manager to core folder

fix https://linear.app/ghost/issue/ENG-2116/adapter-manager

- this commit moves the lib code and tests to the core folder so we can
  colocate code in one place rather than splitting it out across
  packages, which increases the cognitive load and overhead

.docker/Dockerfile

@@ -66,7 +66,6 @@ COPY apps/shade/package.json apps/shade/package.json
 COPY apps/signup-form/package.json apps/signup-form/package.json
 COPY apps/sodo-search/package.json apps/sodo-search/package.json
 COPY ghost/adapter-cache-redis/package.json ghost/adapter-cache-redis/package.json
-COPY ghost/adapter-manager/package.json ghost/adapter-manager/package.json
 COPY ghost/admin/lib/asset-delivery/package.json ghost/admin/lib/asset-delivery/package.json
 COPY ghost/admin/lib/ember-power-calendar-moment/package.json ghost/admin/lib/ember-power-calendar-moment/package.json
 COPY ghost/admin/lib/ember-power-calendar-utils/package.json ghost/admin/lib/ember-power-calendar-utils/package.json

compose.yml

@@ -33,7 +33,6 @@ services:
       ## Prevent collisions between host and container node_modules
       - node_modules_ghost_root:/home/ghost/node_modules:delegated
       - node_modules_ghost_adapter-cache-redis:/home/ghost/ghost/adapter-cache-redis/node_modules:delegated
-      - node_modules_ghost_adapter-manager:/home/ghost/ghost/adapter-manager/node_modules:delegated
       - node_modules_ghost_admin:/home/ghost/ghost/admin/node_modules:delegated
       - node_modules_ghost_api-framework:/home/ghost/ghost/api-framework/node_modules:delegated
       - node_modules_ghost_constants:/home/ghost/ghost/constants/node_modules:delegated
@@ -173,7 +172,6 @@ volumes:
   redis-data: {}
   node_modules_ghost_root: {}
   node_modules_ghost_adapter-cache-redis: {}
-  node_modules_ghost_adapter-manager: {}
   node_modules_ghost_admin: {}
   node_modules_ghost_api-framework: {}
   node_modules_ghost_constants: {}

ghost/adapter-manager/.eslintrc.js

@@ -1,6 +0,0 @@
-module.exports = {
-    plugins: ['ghost'],
-    extends: [
-        'plugin:ghost/node'
-    ]
-};

ghost/adapter-manager/README.md

@@ -1,26 +0,0 @@
-# Adapter Manager
-
-A manager for retrieving custom "adapters" - can be used to abstract away from custom implementations
-
-## Usage
-
-```js
-const AdapterManager = require('@tryghost/adapter-manager');
-
-const adapterManager = new AdapterManager({
-    pathsToAdapters: [
-        '/path/to/custom/adapters',
-        '/path/to/default/adapters'
-    ]
-});
-
-class MailAdapterBase {
-    someMethod() {}
-}
-
-adapterManager.register('mail', MailAdapterBase);
-
-const mailAdapterInstance = adapterManager.getAdapter('mail', 'direct', mailConfig);
-
-mailAdapterInstance.someMethod();
-```

ghost/adapter-manager/index.js

@@ -1 +0,0 @@
-module.exports = require('./lib/AdapterManager');

ghost/adapter-manager/package.json

@@ -1,29 +0,0 @@
-{
-  "name": "@tryghost/adapter-manager",
-  "private": true,
-  "version": "0.0.0",
-  "author": "Ghost Foundation",
-  "license": "MIT",
-  "main": "index.js",
-  "scripts": {
-    "dev": "echo \"Implement me!\"",
-    "test:unit": "NODE_ENV=testing c8 --all --reporter text --reporter cobertura -- mocha --reporter dot './test/**/*.test.js'",
-    "test": "yarn test:unit",
-    "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"
-  },
-  "files": [
-    "index.js",
-    "lib"
-  ],
-  "devDependencies": {
-    "c8": "8.0.1",
-    "mocha": "10.8.2",
-    "should": "13.2.3",
-    "sinon": "15.2.0"
-  },
-  "dependencies": {
-    "@tryghost/errors": "1.3.5"
-  }
-}

ghost/adapter-manager/test/.eslintrc.js

@@ -1,6 +0,0 @@
-module.exports = {
-    plugins: ['ghost'],
-    extends: [
-        'plugin:ghost/test'
-    ]
-};

ghost/core/core/server/services/adapter-manager/index.js

@@ -1,4 +1,4 @@
-const AdapterManager = require('@tryghost/adapter-manager');
+const AdapterManager = require('./AdapterManager');
 const getAdapterServiceConfig = require('./config');
 const resolveAdapterOptions = require('./options-resolver');
 const config = require('../../../shared/config');

ghost/core/package.json

@@ -65,7 +65,6 @@
     "@slack/webhook": "7.0.5",
     "@tryghost/adapter-base-cache": "0.1.12",
     "@tryghost/adapter-cache-redis": "0.0.0",
-    "@tryghost/adapter-manager": "0.0.0",
     "@tryghost/admin-api-schema": "4.5.5",
     "@tryghost/api-framework": "0.0.0",
     "@tryghost/bookshelf-plugins": "0.6.25",

ghost/core/test/unit/server/services/adapter-manager/AdapterManager.test.js

@@ -1,6 +1,6 @@
 const sinon = require('sinon');
 const should = require('should');
-const AdapterManager = require('../');
+const AdapterManager = require('../../../../../core/server/services/adapter-manager/AdapterManager');
 
 class BaseMailAdapter {
     constructor() {