Add package.json exports to AGTree

Merge in ADGUARD-FILTERS/tsurlfilter from fix/agtree-package-json-exports to master

Squashed commit of the following:

commit 0b12d23
Merge: 8526074 b4453b2
Author: scripthunter7 <d.tota@adguard.com>
Date:   Mon Sep 4 11:17:38 2023 +0200

    Merge branch 'master' into fix/agtree-package-json-exports

commit 8526074
Author: scripthunter7 <d.tota@adguard.com>
Date:   Fri Sep 1 15:58:32 2023 +0200

    Add comment

commit 522c23a
Author: scripthunter7 <d.tota@adguard.com>
Date:   Fri Sep 1 15:50:37 2023 +0200

    Change scriptlets lib import

commit b8ae548
Author: scripthunter7 <d.tota@adguard.com>
Date:   Fri Sep 1 15:47:25 2023 +0200

    Add exports to package.json

packages/agtree/package.json

@@ -25,6 +25,15 @@
     "module": "dist/agtree.esm.js",
     "browser": "dist/agtree.umd.min.js",
     "types": "dist/agtree.d.ts",
+    "exports": {
+        ".": {
+            "import": "./dist/agtree.esm.js",
+            "require": "./dist/agtree.cjs"
+        },
+        "./es": "./dist/agtree.esm.js",
+        "./iife": "./dist/agtree.iife.min.js",
+        "./umd": "./dist/agtree.umd.min.js"
+    },
     "files": [
         "dist"
     ],

packages/agtree/src/converter/misc/network-rule-modifier.ts

@@ -3,14 +3,20 @@
  */
 
 import cloneDeep from 'clone-deep';
-import { redirects } from '@adguard/scriptlets';
+import scriptlets from '@adguard/scriptlets';
 
 import { type ModifierList } from '../../parser/common';
 import { SEMICOLON, SPACE } from '../../utils/constants';
 import { createModifierListNode, createModifierNode } from '../../ast-utils/modifiers';
 import { ConverterBase } from '../base-interfaces/converter-base';
 import { RuleConversionError } from '../../errors/rule-conversion-error';
 
+// Since scriptlets library doesn't have ESM exports, we should import
+// the whole module and then extract the required functions from it here.
+// Otherwise importing AGTree will cause an error in ESM environment,
+// because scriptlets library doesn't support named exports.
+const { redirects } = scriptlets;
+
 /**
  * Modifier conversion interface.
  */