feat: implement function-level gas tracking for solidity tests

[galargh]

• Because this PR includes a bug fix, relevant tests have been included.
• Because this PR includes a new feature, the change was previously discussed on an Issue or with someone from the team.
• I didn't do anything of this.

---

This PR implements v0 from https://www.notion.so/nomicfoundation/Function-level-gas-reporting-for-Solidity-tests-Hardhat-3-Implementation-Plan-241578cdeaf580fe99bee173b5e8e4e0?source=copy_link#241578cdeaf580d48831cc8a7d1326eb

It is in draft because it does not implement any tests yet. I'll add the tests once the implementation plan for v0 is approved.

It adds a dependency on string-width which allows discovering the true display width of strings which is useful for building terminal tables.

This is an example of a gas report displayed in the terminal:

[changeset-bot]

🦋 Changeset detected

Latest commit: 868a611

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
@nomicfoundation/hardhat-utils	Patch
hardhat	Patch

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[github-actions]

hardhat

Total size of the bundle: 55M
Total number of dependencies (including transitive): 41

List of dependencies (sorted by size)

48M	total
20M	esbuild
7.3M	@sentry/core
5.2M	zod
2.7M	micro-eth-signer
1.9M	@noble/curves
1.7M	undici
1.2M	@noble/hashes
880K	@nomicfoundation/hardhat-utils
864K	@streamparser/json
624K	micro-packed
592K	tsx
544K	fast-equals
532K	@nomicfoundation/hardhat-errors
492K	@scure/bip39
448K	@nomicfoundation/edr
408K	json-stream-stringify
368K	ethereum-cryptography
332K	@streamparser/json-node
320K	enquirer
288K	semver
200K	ws
168K	@scure/base
136K	get-tsconfig
136K	adm-zip
96K	@scure/bip32
92K	chalk
72K	@nomicfoundation/solidity-analyzer
68K	debug
64K	@nomicfoundation/hardhat-zod-utils
56K	rfdc
52K	emoji-regex
48K	ansi-colors
44K	resolve.exports
40K	resolve-pkg-maps
36K	p-map
36K	get-east-asian-width
24K	strip-ansi
24K	string-width
24K	env-paths
24K	ansi-regex
20K	ms