Achieve 100% Core compliance, implement CATCH/THROW

Core word set: 0 errors on Gerry Jackson's forth2012-test-suite/core.fr
- Fix POSTPONE for non-immediate words via COMPILE, mechanism
- Fix double-DOES> (WEIRD: pattern) with does-body scanning and
  runtime patching via _DOES_PATCH_
- Implement CATCH/THROW exception handling using wasmtime trap
  mechanism with stack pointer save/restore
- 232 tests passing

dprint.json

@@ -0,0 +1,14 @@
+{
+  "markdown": {
+    "lineWidth": 120,
+    "textWrap": "maintain"
+  },
+  "includes": ["**/*.md"],
+  "excludes": [
+    "target/",
+    "tests/forth2012-test-suite/"
+  ],
+  "plugins": [
+    "https://plugins.dprint.dev/markdown-0.21.1.wasm"
+  ]
+}