feat(cloudsmith): create plugin to allow us to set cloudsmith options

Tool Kit will not allow you to declare options for plugins that don't
exist (to avoid the likely case that there was a typo), but we want to
declare Cloudsmith specific options that are used to generate CircleCI
config. Declare a barebones plugin to facilitate this.

plugins/circleci-deploy/.toolkitrc.yml

@@ -1,5 +1,6 @@
 plugins:
   - '@dotcom-tool-kit/circleci'
+  - '@dotcom-tool-kit/cloudsmith'
 
 options:
   hooks:

plugins/circleci-deploy/package.json

@@ -11,6 +11,7 @@
   "license": "ISC",
   "dependencies": {
     "@dotcom-tool-kit/circleci": "^7.0.2",
+    "@dotcom-tool-kit/cloudsmith": "^0.1.0",
     "tslib": "^2.3.1"
   },
   "repository": {

plugins/cloudsmith/.toolkitrc.yml

@@ -0,0 +1 @@
+version: 2

plugins/cloudsmith/package.json

@@ -0,0 +1,31 @@
+{
+  "name": "@dotcom-tool-kit/cloudsmith",
+  "version": "0.1.0",
+  "description": "",
+  "main": "lib",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "FT.com Platforms Team <[email protected]>",
+  "license": "ISC",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/financial-times/dotcom-tool-kit.git",
+    "directory": "plugins/cloudsmith"
+  },
+  "bugs": "https://github.com/financial-times/dotcom-tool-kit/issues",
+  "homepage": "https://github.com/financial-times/dotcom-tool-kit/tree/main/plugins/cloudsmith",
+  "files": [
+    "/lib",
+    ".toolkitrc.yml"
+  ],
+  "engines": {
+    "node": "18.x || 20.x",
+    "npm": "7.x || 8.x || 9.x || 10.x"
+  },
+  "peerDependencies": {
+    "dotcom-tool-kit": "4.x"
+  }
+}
+