Add block proof support

[bogdan-rosianu]

Reasoning

• new (not yet released) versions of the protocol (andromeda) have 2 new fields on blocks

Proposed Changes

• return these 2 new fields if they exist
• the object just needed to be extended, because the deserialization will fill them

How to test

[github-actions]

k6 load testing comparison.
Base Commit Hash: 887bd0b
Target Commit Hash: 785c1c1

Metric	Base				Target				Diff
	Avg	Max	90	95	Avg	Max	90	95	Avg	Max	90	95
Mex	48.85	690.89	53.01	54.79	49.79	190.57	54.95	56.99	+1.93% 🔴	-72.42% ✅	+3.66% 🔴	+4.03% 🔴
Transactions	65.82	2319.06	54.08	57.21	69.81	2459.28	55.67	59.84	+6.05% 🔴	+6.05% 🔴	+2.94% 🔴	+4.59% 🔴
Blocks	56.30	1711.57	53.35	56.00	57.38	1456.44	55.80	59.29	+1.92% 🔴	-14.91% ✅	+4.58% 🔴	+5.87% 🔴
Nodes	49.57	1188.65	53.07	55.08	50.13	472.18	54.93	56.93	+1.13% 🔴	-60.28% ✅	+3.51% 🔴	+3.37% 🔴
Pool	48.50	399.35	52.90	54.68	49.97	315.71	54.95	56.97	+3.04% 🔴	-20.94% ✅	+3.87% 🔴	+4.18% 🔴
Accounts	49.93	1544.63	52.92	54.50	51.62	1630.37	54.97	57.15	+3.38% 🔴	+5.55% 🔴	+3.87% 🔴	+4.85% 🔴
Tokens	48.73	524.33	52.94	54.79	50.29	606.10	54.93	56.94	+3.21% 🔴	+15.59% 🔴	+3.75% 🔴	+3.93% 🔴
Test Run Duration	60004.70				60005.15

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