feat: expose bucketArn/bucketName and domain name getters on SecureBucket (fixes #41)

[hanu-14]

Adds pass-through readonly getters for bucketArn, bucketName, bucketDomainName, and bucketRegionalDomainName on SecureBucket so common attribute access no longer requires .bucket. Includes tests; jsii build and full suite pass.

[alphacrack]

Nice work — plain get accessors are exactly the jsii-friendly shape (they translate to properties in Python/Java/.NET), the doc comments are consistent with the file's style, and including the two domain-name getters covers the "consider" part of #41.

One non-blocking nit: the second test (resolves getters to the same values as the wrapped bucket) asserts a subset of what the first already covers. Consider dropping it, or making it assert something distinct — e.g. that Token.isUnresolved(bucket.bucketArn) is true, which would prove the getter returns the live CDK token. Fine to address here or not at all.

[alphacrack]

Re-checked against the new main: MERGEABLE/CLEAN. Two things verified specifically for today's toolchain moves:

• The plain get accessors compile identically under jsii 6 (now on main) — no jsii-compat concerns.
• The ESLint 10 migration (chore: migrate to ESLint 10 flat config #59) kept all rules 1:1, so this diff lints clean under the new flat config.

Merges after #54. Ready.

[hanu-14]

Thanks for the thorough review! I appreciate the verification of jsii 6 compatibility and ESLint 10 cleanliness. The diff looks good as-is, and I’ll merge after #54.