✏ README, fix start-once bug and refactor

- Added some configuration and running to README
- Refactored some code
- Fixed exception when stopping a start-once script
- Only allow running with pnpm
- Moved transactions into sparebank1Api.ts
- Formatted

tsconfig.json

@@ -1,8 +1,5 @@
 {
-  "include": [
-    "./src/**/*.ts",
-    "./tests/**/*.ts"
-  ],
+  "include": ["./src/**/*.ts", "./tests/**/*.ts"],
   "compilerOptions": {
     "target": "esnext",
     "module": "ESNext",
@@ -13,14 +10,8 @@
     "skipLibCheck": true,
     "allowImportingTsExtensions": true,
     "paths": {
-      "@/*": [
-        "./src/*"
-      ]
+      "@/*": ["./src/*"]
     }
   },
-  "exclude": [
-    "node_modules",
-    "./*.ts",
-    "__test__"
-  ]
+  "exclude": ["node_modules", "./*.ts", "__test__"]
 }