feat: make mongodb-client-encryption optional VSCODE-342 (#439)

* feat: make mongodb-client-encryption optional VSCODE-342

* refactor: use library type in webpack config

* refactor: void telemetry flush

* build: npm ci omit optional

Author: alenakhineika

.github/workflows/test-and-build.yaml

@@ -52,7 +52,7 @@ jobs:
 
       - name: Install Dependencies
         shell: bash
-        run: npm ci
+        run: npm ci --omit=optional
 
       - name: Run Checks
         run: npm run check