Support attach relational database with schema

[acquamarin]

This PR supports attaching relational database (postgres, duckdb) with schema option.
The grammar is:

ATTACH '<DB_CONNECTION>' AS <DB_ALIAS> (TYPE <DB_TYPE>,  SCHEMA='')

[github-actions]

Benchmark Result

Master commit hash: 24e669d1e6ae109a4d163b342c7fb501b949074a
Branch commit hash: 45f92887451ace74d21e3696ae6eced2eddf5b4e

Query Group	Query Name	Mean Time - Commit (ms)	Mean Time - Master (ms)	Diff
aggregation	q24	644.74	649.76	-5.02 (-0.77%)
aggregation	q28	11999.98	11896.14	103.84 (0.87%)
filter	q14	125.60	127.08	-1.48 (-1.16%)
filter	q15	129.87	134.60	-4.73 (-3.52%)
filter	q16	302.42	304.62	-2.20 (-0.72%)
filter	q17	446.88	446.44	0.45 (0.10%)
filter	q18	1998.35	1991.50	6.85 (0.34%)
filter	zonemap-node	88.96	88.65	0.31 (0.35%)
filter	zonemap-node-lhs-cast	88.07	86.24	1.83 (2.12%)
filter	zonemap-rel	5780.76	5734.73	46.03 (0.80%)
fixed_size_expr_evaluator	q07	573.03	581.14	-8.11 (-1.39%)
fixed_size_expr_evaluator	q08	801.70	815.94	-14.24 (-1.75%)
fixed_size_expr_evaluator	q09	803.19	806.06	-2.87 (-0.36%)
fixed_size_expr_evaluator	q10	236.83	240.30	-3.48 (-1.45%)
fixed_size_expr_evaluator	q11	230.01	232.31	-2.30 (-0.99%)
fixed_size_expr_evaluator	q12	227.35	229.21	-1.86 (-0.81%)
fixed_size_expr_evaluator	q13	1454.24	1465.91	-11.67 (-0.80%)
fixed_size_seq_scan	q23	111.29	114.22	-2.93 (-2.56%)
join	q29	582.06	599.51	-17.45 (-2.91%)
join	q30	1497.24	1571.22	-73.99 (-4.71%)
join	q31	4.72	4.88	-0.16 (-3.33%)
join	SelectiveTwoHopJoin	49.81	47.54	2.27 (4.78%)
ldbc_snb_ic	q35	2621.54	2629.10	-7.56 (-0.29%)
ldbc_snb_ic	q36	543.85	542.96	0.89 (0.16%)
ldbc_snb_is	q32	5.25	4.25	1.00 (23.64%)
ldbc_snb_is	q33	13.70	11.73	1.98 (16.85%)
ldbc_snb_is	q34	1.12	1.18	-0.05 (-4.54%)
multi-rel	multi-rel-large-scan	1232.84	1212.90	19.94 (1.64%)
multi-rel	multi-rel-lookup	10.03	22.35	-12.32 (-55.13%)
multi-rel	multi-rel-small-scan	90.76	77.07	13.69 (17.76%)
order_by	q25	129.72	131.86	-2.14 (-1.63%)
order_by	q26	447.78	450.99	-3.21 (-0.71%)
order_by	q27	1495.56	1512.70	-17.14 (-1.13%)
recursive_join	recursive-join-bidirection	273.33	272.65	0.68 (0.25%)
recursive_join	recursive-join-dense	4793.97	6338.61	-1544.64 (-24.37%)
recursive_join	recursive-join-path	22990.18	23739.55	-749.37 (-3.16%)
recursive_join	recursive-join-sparse	13807.16	14344.63	-537.47 (-3.75%)
recursive_join	recursive-join-trail	4484.74	6826.60	-2341.86 (-34.30%)
scan_after_filter	q01	172.48	172.53	-0.04 (-0.02%)
scan_after_filter	q02	154.93	156.09	-1.16 (-0.74%)
shortest_path_ldbc100	q37	82.55	86.81	-4.26 (-4.91%)
shortest_path_ldbc100	q38	365.17	333.62	31.55 (9.46%)
shortest_path_ldbc100	q39	57.06	57.34	-0.28 (-0.49%)
shortest_path_ldbc100	q40	416.22	415.87	0.34 (0.08%)
var_size_expr_evaluator	q03	2131.79	2104.76	27.03 (1.28%)
var_size_expr_evaluator	q04	2302.00	2289.01	12.99 (0.57%)
var_size_expr_evaluator	q05	2595.57	2575.55	20.02 (0.78%)
var_size_expr_evaluator	q06	1343.44	1351.14	-7.70 (-0.57%)
var_size_seq_scan	q19	1482.55	1475.86	6.69 (0.45%)
var_size_seq_scan	q20	2693.66	2736.49	-42.84 (-1.57%)
var_size_seq_scan	q21	2301.29	2282.99	18.29 (0.80%)
var_size_seq_scan	q22	126.67	127.78	-1.11 (-0.87%)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.52%. Comparing base (24e669d) to head (d27412d).
Report is 3 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4639   +/-   ##
=======================================
  Coverage   86.52%   86.52%           
=======================================
  Files        1369     1369           
  Lines       57973    57973           
  Branches     7208     7208           
=======================================
+ Hits        50161    50163    +2     
+ Misses       7645     7643    -2     
  Partials      167      167           

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