feat(il2cpp): read member names, string literals and metadata versions 24 and 27 (#5326)

* feat(il2cpp): read member names, string literals and metadata versions 24 and 27

Adds field, property, event and parameter names with their owners, managed string literals, and the version 24 and 27 header layouts to inspect_il2cpp_metadata, with filtered pages for the new collections. Member decoding yields between row batches like the other row readers.

* fix(il2cpp): bound metadata expansion and query parameter owners

* test(il2cpp): cover nonempty property and event tables

---------

Co-authored-by: gensokyo-dev <gensokyo-dev@users.noreply.github.com>

src/il2cpp/Il2cppMetadataFormat.ts

@@ -0,0 +1,53 @@
+/** Stable machine-readable reason for each rejected input. */
+export const IL2CPP_METADATA_FAILURE_REASONS = {
+  unsupported: ["unrecognized-magic", "unsupported-version"],
+  corrupt: [
+    "truncated-header",
+    "unexpected-header-size",
+    "section-out-of-bounds",
+    "section-overlap",
+    "record-size-mismatch",
+    "type-index-width",
+    "index-out-of-range",
+    "nested-type-conflict",
+    "declaring-type-mismatch",
+    "image-range-overlap",
+    "invalid-string",
+  ],
+} as const;
+export type Il2cppMetadataFailureKind =
+  keyof typeof IL2CPP_METADATA_FAILURE_REASONS;
+export type Il2cppMetadataFailureReason =
+  (typeof IL2CPP_METADATA_FAILURE_REASONS)[Il2cppMetadataFailureKind][number];
+
+/** Distinguish inputs outside decoder coverage from damaged metadata. */
+export class Il2cppMetadataFormatFailure extends Error {
+  readonly kind: Il2cppMetadataFailureKind;
+  constructor(
+    readonly reason: Il2cppMetadataFailureReason,
+    message: string,
+    options?: ErrorOptions,
+  ) {
+    super(`${reason}: ${message}`, options);
+    this.name = "Il2cppMetadataFormatFailure";
+    this.kind = (
+      IL2CPP_METADATA_FAILURE_REASONS.unsupported as readonly string[]
+    ).includes(reason)
+      ? "unsupported"
+      : "corrupt";
+  }
+}
+
+export const checkRange = (
+  label: string,
+  start: number,
+  length: number,
+  total: number,
+) => {
+  if (length === 0 && start >= -1 && start <= total) return;
+  if (start < 0 || start + length > total)
+    throw new Il2cppMetadataFormatFailure(
+      "index-out-of-range",
+      `${label} range [${start}, ${start + length}) is outside the ${total} available entries`,
+    );
+};