Support for {@const ...}

[tivac]

I just used patch-package to add this support, but figured it might be useful for other folks. Only very lightly tested, but seems to work well on a simple case.

diff --git a/node_modules/svelte-trim/out/cjs/index.js b/node_modules/svelte-trim/out/cjs/index.js
index 08fbc2b..fed3c55 100644
--- a/node_modules/svelte-trim/out/cjs/index.js
+++ b/node_modules/svelte-trim/out/cjs/index.js
@@ -25,7 +25,7 @@ const blockTypes = [
     'CatchBlock',
     'KeyBlock'
 ];
-const atDirectiveTypes = ['DebugTag', 'RawMustacheTag'];
+const atDirectiveTypes = ['DebugTag', 'RawMustacheTag', 'ConstTag'];
 function isNodeType(node, someType) {
     if (someType.includes(node.type)) {
         return true;