ENG-0000 - Refresh

- Updated typescript to 4.7.x
- Updated other packages to corresponding latest version
- AlApiClient renamed to AlXHRAdapter for accuracy
- AlDefaultClient renamed to AlRootClient (again, for accuracy)
- Added @ServiceClient decorator and AlBaseServiceClient, allowing JIT
  service instantiation and better tree shaking
- Updated AIMSClient and SubscriptionsClient to use new client model
- Retired some obsolete content

Client Architecture:

Previously, our API Client architecture has consisted of declaring the
client class and then immediately instantiating it as a global variable.
In practice, this means that clients a) cannot be tree shaken or bundled
outside of the main bundle, and b) every client must by compiled and
instantiated before application bootstrap.  This is dumb.

The new model uses a decorator to identify classes that represent a
client.  The decorator stores the class's constructor and some default
settings for it into a dictionary, which can be used to instantiate the
client on-demand.

For example:

```
@ServiceClient( {
    service_name: "gestalt",
    service_stack: AlLocation.GestaltAPI,
    version: 1
} )
export class AlsGestalt extends AlBaseServiceClient {
    ...
}
```

Or

```
@ServiceClient( {
    service_name: "iris",
    version: 'v3',
    residencyAware: true
} )
export class AlsIris extends AlBaseServiceClient {
    ...
}
```

These classes do not need to be instantiated until they are actually
needed. Additional, the properties provided to the ServiceClient
decorator as used as defaults, and the AlBaseServiceClient provides
convenience `get`, `put`, `post`, `delete`, and `request` methods to
facilitate extremely minimal implementations.

Nomenclature:

Client classes should begin with an "Als" prefix, and be stored with a
.service-client.ts extension.

Author: mcnielsen

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "@al/core",
-  "version": "1.0.190",
+  "version": "2.0.0",
   "description": "Node Enterprise Packages for Alert Logic (NEPAL) Core Library",
   "main": "./dist/index.cjs.js",
   "types": "./dist/index.d.ts",
@@ -41,28 +41,29 @@
   "devDependencies": {
     "@types/auth0-js": "^9.14.5",
     "@types/chai": "^4.2.21",
-    "@types/karma": "^5.0.0",
+    "@types/karma": "^6.3.3",
     "@types/mocha": "^7.0.2",
     "@types/qs": "^6.9.7",
     "@types/sinon": "^9.0.0",
     "chai": "^4.2.0",
     "copy-webpack-plugin": "^5.0.5",
-    "karma": "^6.3.4",
-    "karma-chrome-launcher": "^3.1.0",
+    "karma": "^6.4.0",
+    "karma-chrome-launcher": "^3.1.1",
     "karma-cli": "^2.0.0",
-    "karma-mocha": "^1.3.0",
-    "karma-typescript": "^5.0.2",
+    "karma-mocha": "^2.0.1",
+    "karma-typescript": "^5.5.3",
     "mocha": "~7.0.1",
     "peer-deps-externals-webpack-plugin": "^1.0.4",
     "rollup": "^2.56.2",
     "rollup-plugin-copy": "^3.3.0",
     "rollup-plugin-terser": "^5.3.0",
-    "rollup-plugin-typescript2": "^0.27.0",
+    "rollup-plugin-typescript2": "^0.32.1",
     "sinon": "^9.0.2",
     "ts-loader": "^6.2.2",
+    "tslib": "^2.4.0",
     "tslint": "^5.12.1",
     "tslint-config-airbnb": "^5.11.1",
-    "typescript": "^3.9.10",
+    "typescript": "^4.7.4",
     "webpack": "^4.41.2",
     "webpack-bundle-analyzer": "^3.6.0",
     "webpack-cli": "^3.2.1",