Export NFT/SFT/MetaESDT hash field

[bogdan-rosianu]

Reasoning

• the hash field of NFTs/SFTs/MetaESDTs was not reflected on the API

Proposed Changes

• return hash field as well

How to test

[github-actions]

k6 load testing comparison.
Base Commit Hash: 887bd0b
Target Commit Hash: aace90e

Metric	Base				Target				Diff
	Avg	Max	90	95	Avg	Max	90	95	Avg	Max	90	95
Accounts	48.29	962.37	50.92	52.91	50.14	1092.53	53.20	55.08	+3.83% 🔴	+13.53% 🔴	+4.47% 🔴	+4.09% 🔴
Transactions	60.63	2718.85	51.55	55.35	62.10	2166.58	54.01	59.76	+2.43% 🔴	-20.31% ✅	+4.75% 🔴	+7.96% 🔴
Tokens	47.09	182.39	51.05	52.81	48.99	495.09	53.26	55.27	+4.03% 🔴	+171.45% 🔴	+4.33% 🔴	+4.66% 🔴
Mex	47.13	153.74	51.00	52.96	48.81	367.70	53.25	55.32	+3.55% 🔴	+139.16% 🔴	+4.41% 🔴	+4.47% 🔴
Nodes	48.63	1348.81	50.93	53.06	49.47	640.61	53.24	55.20	+1.74% 🔴	-52.51% ✅	+4.54% 🔴	+4.03% 🔴
Blocks	53.11	1128.32	51.63	56.86	55.78	1455.19	53.76	57.33	+5.04% 🔴	+28.97% 🔴	+4.12% 🔴	+0.84% 🔴
Pool	47.81	573.69	51.01	52.96	48.78	566.64	53.27	55.40	+2.03% 🔴	-1.23% ✅	+4.42% 🔴	+4.61% 🔴
Test Run Duration	60011.64				60002.02

Legend: Avg - Average Response Time, Max - Maximum Response Time, 90 - 90th Percentile, 95 - 95th Percentile
All times are in milliseconds.