Clean up npm setup (#2201)

This cleans up the npm packages & workspaces:

* All recurrent dependencies (`@dfinity` ones) are deduplicated (to the same
  version as the II app)
* Unnecessary dev dependencies are removed from vc_issuer
* `tsconfig.all.json` is formatted
* `tsconfig.json`s are cleaned up to remove redundant `./`

demos/test-app/package.json

@@ -3,11 +3,11 @@
   "type": "module",
   "private": true,
   "dependencies": {
-    "@dfinity/agent": "^0.19.2",
-    "@dfinity/auth-client": "^0.19.2",
-    "@dfinity/candid": "^0.19.2",
-    "@dfinity/identity": "^0.19.2",
-    "@dfinity/principal": "^0.19.2",
+    "@dfinity/agent": "*",
+    "@dfinity/auth-client": "*",
+    "@dfinity/candid": "*",
+    "@dfinity/identity": "*",
+    "@dfinity/principal": "*",
     "buffer": "^6.0.3",
     "jose": "^5.1.2",
     "react": "^18.2.0",

demos/test-app/tsconfig.json

@@ -1,5 +1,5 @@
 {
-  "extends": "./../../tsconfig.json",
+  "extends": "../../tsconfig.json",
   "include": ["vite.config.ts", "./src"],
   "compilerOptions": {
     "jsx": "react-jsx",

demos/vc_issuer/package.json

@@ -4,18 +4,15 @@
   "private": true,
   "license": "SEE LICENSE IN LICENSE.md",
   "dependencies": {
-    "@dfinity/agent": "^0.19.3",
-    "@dfinity/auth-client": "^0.19.3",
-    "@dfinity/candid": "^0.19.3",
-    "@dfinity/identity": "^0.19.3",
-    "@dfinity/principal": "^0.19.3",
-    "@dfinity/utils": "^0.0.20",
+    "@dfinity/agent": "*",
+    "@dfinity/auth-client": "*",
+    "@dfinity/candid": "*",
+    "@dfinity/identity": "*",
+    "@dfinity/principal": "*",
+    "@dfinity/utils": "*",
     "buffer": "^6.0.3",
-    "html-minifier-terser": "^7.2.0",
-    "http-proxy": "^1.18.1",
     "react": "^18.2.0",
-    "react-dom": "^18.2.0",
-    "vite-plugin-compression": "^0.5.1"
+    "react-dom": "^18.2.0"
   },
   "scripts": {
     "dev": "vite --config ./vite.config.ts",
@@ -28,8 +25,6 @@
   },
   "devDependencies": {
     "@dfinity/internet-identity-vite-plugins": "*",
-    "@types/html-minifier-terser": "^7.0.0",
-    "@types/http-proxy": "^1.17.14",
     "@types/react": "^18.2.38",
     "@types/react-dom": "^18.2.17",
     "@vitejs/plugin-react": "^4.2.0",

demos/vc_issuer/tsconfig.json

@@ -1,5 +1,5 @@
 {
-  "extends": "./../../tsconfig.json",
+  "extends": "../../tsconfig.json",
   "include": ["vite.config.ts", "./app"],
   "compilerOptions": {
     "composite": true,