go/store/nbs: Move to golang maps instead of dolthub/swiss.

[reltuk]

No description provided.

[reltuk]

#benchmark

[github-actions]

@reltuk workflow run: https://github.com/dolthub/dolt/actions/runs/13576327392

[coffeegoddd]

@reltuk DOLT

comparing_percentages
100.000000 to 100.000000

version	result	total
5897970	ok	5937457

version	total_tests
5897970	5937457

correctness_percentage
100.0

[coffeegoddd]

@reltuk DOLT

test_name	from_latency_p95	to_latency_p95	percent_change
tpcc-scale-factor-1	58.92	58.92	0.0

test_name	from_server_name	from_server_version	from_tps	to_server_name	to_server_version	to_tps	percent_change
tpcc-scale-factor-1	dolt	1b0f660	40.72	dolt	5897970	40.17	-1.35

[coffeegoddd]

@reltuk DOLT

read_tests	from_latency	to_latency	percent_change
covering_index_scan	0.64	0.65	1.56
groupby_scan	17.95	17.95	0.0
index_join	2.61	2.52	-3.45
index_join_scan	1.5	1.44	-4.0
index_scan	30.81	30.26	-1.79
oltp_point_select	0.27	0.27	0.0
oltp_read_only	5.28	5.28	0.0
select_random_points	0.6	0.6	0.0
select_random_ranges	0.62	0.62	0.0
table_scan	32.53	32.53	0.0
types_table_scan	112.67	112.67	0.0

write_tests	from_latency	to_latency	percent_change
oltp_delete_insert	6.32	6.32	0.0
oltp_insert	3.13	3.13	0.0
oltp_read_write	11.65	11.65	0.0
oltp_update_index	3.19	3.19	0.0
oltp_update_non_index	3.07	3.13	1.95
oltp_write_only	6.32	6.43	1.74
types_delete_insert	6.67	6.67	0.0