feat(bpmn-service): add camunda implementation, add tests

services/bpmn-service/.vscode/settings.json

@@ -5,8 +5,8 @@
   "editor.trimAutoWhitespace": true,
   "editor.formatOnSave": true,
   "editor.codeActionsOnSave": {
-    "source.organizeImports": true,
-    "source.fixAll.eslint": true
+    "source.organizeImports": "explicit",
+    "source.fixAll.eslint": "explicit"
   },
 
   "files.exclude": {

services/bpmn-service/README.md

@@ -48,11 +48,23 @@ npm i @sourceloop/bpmn-service
   });
   ```
 - Implement `WorkflowProvider` (refer [this](#bpmnprovider)) and bind it to `WorkflowServiceBindings.WorkflowManager` key -
+
   ```typescript
   this.bind(WorkflowServiceBindings.WorkflowManager).toProvider(
     WorkflowProvider,
   );
   ```
+
+  OR
+
+  Use an existing workflow provider, like the Camunda 7 provided with this library -
+
+  ```typescript
+  this.component(CamundaComponent);
+  ```
+
+  You also need to install the [camunda-external-task-client-js](https://www.npmjs.com/package/camunda-external-task-client-js) library to use this component.
+
 - Add the `WorkflowServiceComponent` to your Loopback4 Application (in `application.ts`).
   ```typescript
   // import WorkflowServiceComponent

services/bpmn-service/package.json

@@ -13,12 +13,19 @@
     "./sequelize": {
       "types": "./dist/repositories/sequelize/index.d.ts",
       "default": "./dist/repositories/sequelize/index.js"
+    },
+    "./camunda": {
+      "types": "./dist/connectors/camunda/index.d.ts",
+      "default": "./dist/connectors/camunda/index.js"
     }
   },
   "typesVersions": {
     "*": {
       "sequelize": [
         "./dist/repositories/sequelize/index.d.ts"
+      ],
+      "camunda": [
+        "./dist/connectors/camunda/index.d.ts"
       ]
     }
   },
@@ -75,7 +82,6 @@
     "@loopback/rest": "^14.0.2",
     "@sourceloop/core": "^14.2.3",
     "ajv": "^8.11.0",
-    "camunda-external-task-client-js": "^2.3.1",
     "dotenv": "^16.0.3",
     "dotenv-extended": "^2.9.0",
     "jsonwebtoken": "^9.0.0",
@@ -90,6 +96,7 @@
     "@loopback/build": "^11.0.2",
     "@loopback/eslint-config": "^15.0.2",
     "@loopback/testlab": "^7.0.2",
+    "camunda-external-task-client-js": "^2.3.1",
     "@types/camunda-external-task-client-js": "^1.3.3",
     "@types/jsonwebtoken": "^9.0.0",
     "@types/lodash": "^4.14.182",
@@ -102,7 +109,8 @@
     "widdershins": "^4.0.1"
   },
   "optionalDependencies": {
-    "@loopback/sequelize": "^0.6.2"
+    "@loopback/sequelize": "^0.6.2",
+    "camunda-external-task-client-js": "^2.3.1"
   },
   "overrides": {
     "widdershins": {