Add programmatic consent API to @probo/cookie-banner

Expose a ConsentManager singleton via `@probo/cookie-banner/consent`
(ESM) and `window.Probo.consent` (IIFE) so customers can check and
react to consent state in their bundled JavaScript code, solving the
problem of third-party SDKs initialized programmatically that cannot
be blocked via data-cookie-consent attributes.

Signed-off-by: Émile Ré <emile@getprobo.com>

packages/cookie-banner/build.mjs

@@ -38,6 +38,12 @@ await Promise.all([
     outfile: "dist/cookie-banner-headless.mjs",
     format: "esm",
   }),
+  esbuild.build({
+    ...shared,
+    entryPoints: ["src/consent.ts"],
+    outfile: "dist/cookie-banner-consent.mjs",
+    format: "esm",
+  }),
   esbuild.build({
     ...shared,
     entryPoints: ["src/themed-banner/iife.ts"],