feat: bases

Add the bases feature: formula engine package, grid/table UI, and the base-embed editor extension, with supporting client and server changes.

packages/base-formula/tsconfig.json

@@ -0,0 +1,11 @@
+{
+  "extends": "../editor-ext/tsconfig.json",
+  "compilerOptions": {
+    "outDir": "./dist",
+    "rootDir": "./src",
+    "declaration": true,
+    "composite": true
+  },
+  "include": ["src/**/*"],
+  "exclude": ["dist", "node_modules"]
+}