[no-release-notes] Add Archive Backup and AWS support

[macneale4]

These changes enable Dolt databases containing archive storage to perform file based backups/restores, and AWS backups/restores, push, pull, and clone operations.

Currently all incremental pushes and fetches produce table files, not archives. The use of backup
allows us to get archive files pushed into S3 for testing.

[coffeegoddd]

@macneale4 DOLT

comparing_percentages
100.000000 to 100.000000

version	result	total
87b0454	ok	5937457

version	total_tests
87b0454	5937457

correctness_percentage
100.0

[coffeegoddd]

@macneale4 DOLT

comparing_percentages
100.000000 to 100.000000

version	result	total
9d74c21	ok	5937457

version	total_tests
9d74c21	5937457

correctness_percentage
100.0

[reltuk]

Followed up offline asking to get rid of flexibleTableReader and make archiveReader carry a tableReaderAt instead. Some things fall out more nicely as a result.

[reltuk]

LGTM. One suggestion about copyright header hygiene.

[coffeegoddd]

@coffeegoddd DOLT

comparing_percentages
100.000000 to 100.000000

version	result	total
99df522	ok	5937457

version	total_tests
99df522	5937457

correctness_percentage
100.0

[coffeegoddd]

@macneale4 DOLT

comparing_percentages
100.000000 to 100.000000

version	result	total
8b4f72e	ok	5937457

version	total_tests
8b4f72e	5937457

correctness_percentage
100.0

[coffeegoddd]

@macneale4 DOLT

comparing_percentages
100.000000 to 100.000000

version	result	total
2e9862a	ok	5937457

version	total_tests
2e9862a	5937457

correctness_percentage
100.0

[github-actions]

@coffeegoddd DOLT

test_name	detail	row_cnt	sorted	mysql_time	sql_mult	cli_mult
batching	LOAD DATA	10000	1	0.07	1.29
batching	batch sql	10000	1	0.09	1.33
batching	by line sql	10000	1	0.1	1.2
blob	1 blob	200000	1	0.92	3.88	4.6
blob	2 blobs	200000	1	0.91	4.44	4.85
blob	no blob	200000	1	0.92	2.46	2.84
col type	datetime	200000	1	0.86	2.37	2.73
col type	varchar	200000	1	0.72	3.39	3.72
config width	2 cols	200000	1	0.78	2.63	2.96
config width	32 cols	200000	1	1.91	2.04	2.74
config width	8 cols	200000	1	0.96	2.48	2.78
pk type	float	200000	1	0.84	2.5	2.8
pk type	int	200000	1	0.94	2.3	2.54
pk type	varchar	200000	1	2.76	0.95	1.04
row count	1.6mm	1600000	1	5.75	2.98	2.99
row count	400k	400000	1	1.59	2.62	2.74
row count	800k	800000	1	2.95	2.87	2.99
secondary index	four index	200000	1	3.58	1.43	1.31
secondary index	no secondary	200000	1	0.95	2.4	2.78
secondary index	one index	200000	1	1.15	2.46	2.52
secondary index	two index	200000	1	2.02	1.8	1.86
sorting	shuffled 1mm	1000000	0	5.34	2.73	2.55
sorting	sorted 1mm	1000000	1	5.24	2.77	2.58

[github-actions]

@coffeegoddd DOLT

name	detail	mean_mult
dolt_blame_basic	system table	1.21
dolt_blame_commit_filter	system table	2.99
dolt_commit_ancestors_commit_filter	system table	0.65
dolt_commits_commit_filter	system table	1.11
dolt_diff_log_join_from_commit	system table	2.83
dolt_diff_log_join_to_commit	system table	2.78
dolt_diff_table_from_commit_filter	system table	1.2
dolt_diff_table_to_commit_filter	system table	1.16
dolt_diffs_commit_filter	system table	1.03
dolt_history_commit_filter	system table	1.31
dolt_log_commit_filter	system table	1.16

[github-actions]

@coffeegoddd DOLT

name	add_cnt	delete_cnt	update_cnt	latency
adds_only	60000	0	0	1.14
adds_updates_deletes	60000	60000	60000	4.57
deletes_only	0	60000	0	2.45
updates_only	0	0	60000	3.06