feat(invoice): add e-invoice support with XRechnung/ZUGFeRD and advanced export features

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@fin.cx/skr",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "description": "SKR03 and SKR04 German accounting standards for double-entry bookkeeping",
   "main": "dist_ts/index.js",
   "typings": "dist_ts/index.d.ts",
@@ -25,16 +25,25 @@
   "license": "MIT",
   "packageManager": "pnpm@10.11.0",
   "dependencies": {
+    "@e-invoice-eu/core": "^2.1.9",
+    "@fin.cx/einvoice": "5.1.4",
     "@push.rocks/smartdata": "^5.15.1",
+    "@push.rocks/smartfile": "^11.0.22",
+    "@push.rocks/smarthash": "^3.0.7",
     "@push.rocks/smartlog": "^3.1.8",
+    "@push.rocks/smartpath": "^5.0.18",
+    "@push.rocks/smartpdf": "^3.1.5",
     "@push.rocks/smarttime": "^4.1.1",
-    "@push.rocks/smartunique": "^3.0.9"
+    "@push.rocks/smartunique": "^3.0.9",
+    "merkletreejs": "^0.4.0",
+    "node-forge": "^1.3.1"
   },
   "devDependencies": {
     "@git.zone/tsbuild": "^2.6.4",
     "@git.zone/tsrun": "^1.3.3",
     "@git.zone/tstest": "^2.3.2",
-    "@push.rocks/qenv": "^6.1.0"
+    "@push.rocks/qenv": "^6.1.0",
+    "@types/node-forge": "^1.3.11"
   },
   "repository": {
     "type": "git",