SF-3370 Add web worker and improve blot formats delta creation (#3334)

Author: siltomato

.vscode/settings.json

@@ -16,6 +16,7 @@
     "Charis",
     "checkmark",
     "combobox",
+    "Comlink",
     "commenters",
     "compodoc",
     "deconsolidate",

src/SIL.XForge.Scripture/ClientApp/angular.json

@@ -63,7 +63,8 @@
             "buildOptimizer": false,
             "sourceMap": true,
             "optimization": false,
-            "namedChunks": true
+            "namedChunks": true,
+            "webWorkerTsConfig": "tsconfig.worker.json"
           },
           "configurations": {
             "production": {
@@ -157,7 +158,8 @@
               "includePaths": ["node_modules"]
             },
             "assets": ["src/favicon.ico", "src/assets", "src/manifest.json"],
-            "sourceMap": false
+            "sourceMap": false,
+            "webWorkerTsConfig": "tsconfig.worker.json"
           }
         },
         "lint": {

src/SIL.XForge.Scripture/ClientApp/package-lock.json

@@ -61,6 +61,7 @@
     "bowser": "^2.11.0",
     "bson-objectid": "^2.0.3",
     "buffer": "^5.7.1",
+    "comlink": "^4.4.2",
     "crc-32": "^1.2.2",
     "file-saver": "^2.0.5",
     "jszip": "^3.10.1",