Allow module level "use no forget"

Currently we only allow adding the directive to function bodies, but there may 
be cases where we want to always opt out an entire module from being compiled by 
Forget

compiler/packages/babel-plugin-react-forget/src/Entrypoint/Program.ts

@@ -188,6 +188,11 @@ export function compileProgram(
   program: NodePath<t.Program>,
   pass: CompilerPass
 ): void {
+  // Top level "use no forget", skip this file entirely
+  if (findUseNoForgetDirective(program.node.directives) != null) {
+    return;
+  }
+
   const options = parsePluginOptions(pass.opts);
   const environment = parseEnvironmentConfig(pass.opts.environment ?? {});
 

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/use-no-forget-module-level.expect.md

@@ -0,0 +1,29 @@
+
+## Input
+
+```javascript
+"use no forget";
+
+export default function foo(x, y) {
+  if (x) {
+    return foo(false, y);
+  }
+  return [y * 10];
+}
+
+```
+
+## Code
+
+```javascript
+"use no forget";
+
+export default function foo(x, y) {
+  if (x) {
+    return foo(false, y);
+  }
+  return [y * 10];
+}
+
+```
+      

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/use-no-forget-module-level.js

@@ -0,0 +1,8 @@
+"use no forget";
+
+export default function foo(x, y) {
+  if (x) {
+    return foo(false, y);
+  }
+  return [y * 10];
+}

compiler/packages/sprout/src/SproutTodoFilter.ts

@@ -384,6 +384,7 @@ const skipFilter = new Set([
   "useMemo-named-function",
   "useMemo-return-empty",
   "useMemo-simple",
+  "use-no-forget-module-level",
   // defines multiple functions
   "alias-while",
   "babel-existing-react-import",