Add namedtuple `Description`

[trim21]

What do these changes do?

add a class Description(typing.NamedTuple) for cursor.description

Are there changes in behavior for the user?

yes, cursor.description now return a tuple[Description] instead of tuple[tuple[...]]

Related issue number

Checklist

• [X] I think the code is well written
• [ ] Unit tests for the changes exist
• [ ] Documentation reflects the changes

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 93.65%. Comparing base (83aa96e) to head (ed82a84).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #981      +/-   ##
==========================================
- Coverage   93.68%   93.65%   -0.03%     
==========================================
  Files          36       37       +1     
  Lines        5538     5550      +12     
  Branches      895      895              
==========================================
+ Hits         5188     5198      +10     
- Misses        260      262       +2     
  Partials       90       90              

Flag	Coverage Δ
CI-GHA	93.26% <100.00%> (-0.03%)	:arrow_down:
DB-mariadb-10.10	90.30% <100.00%> (+0.02%)	:arrow_up:
DB-mariadb-10.11	90.30% <100.00%> (+0.02%)	:arrow_up:
DB-mariadb-10.4	90.32% <100.00%> (+0.02%)	:arrow_up:
DB-mariadb-10.5	90.30% <100.00%> (+0.02%)	:arrow_up:
DB-mariadb-10.6	90.30% <100.00%> (+0.02%)	:arrow_up:
DB-mariadb-10.9	90.30% <100.00%> (+0.02%)	:arrow_up:
DB-mysql-5.7	91.00% <100.00%> (+0.01%)	:arrow_up:
DB-mysql-8.0	92.39% <100.00%> (-0.02%)	:arrow_down:
OS-Linux	93.26% <100.00%> (-0.03%)	:arrow_down:
Py-3.10.11	?
Py-3.10.13	93.17% <100.00%> (?)
Py-3.11.3	?
Py-3.11.8	93.17% <100.00%> (?)
Py-3.7.16	?
Py-3.7.17	92.80% <100.00%> (?)
Py-3.8.16	?
Py-3.8.18	93.19% <100.00%> (?)
Py-3.9.16	?
Py-3.9.18	93.03% <100.00%> (?)
VM-ubuntu-latest	93.26% <100.00%> (-0.03%)	:arrow_down:
ubuntu-latest_3.10_mariadb-10.10	90.21% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.10_mariadb-10.11	90.21% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.10_mariadb-10.4	90.23% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.10_mariadb-10.5	90.21% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.10_mariadb-10.6	90.21% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.10_mariadb-10.9	90.21% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.10_mysql-5.7	90.91% <100.00%> (+0.01%)	:arrow_up:
ubuntu-latest_3.10_mysql-8.0	92.30% <100.00%> (+0.01%)	:arrow_up:
ubuntu-latest_3.11_mariadb-10.10	90.21% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.11_mariadb-10.11	90.21% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.11_mariadb-10.4	90.23% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.11_mariadb-10.5	90.21% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.11_mariadb-10.6	90.21% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.11_mariadb-10.9	90.21% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.11_mysql-5.7	90.91% <100.00%> (+0.01%)	:arrow_up:
ubuntu-latest_3.11_mysql-8.0	92.30% <100.00%> (-0.02%)	:arrow_down:
ubuntu-latest_3.7_mariadb-10.10	89.66% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.7_mariadb-10.11	89.66% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.7_mariadb-10.4	89.68% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.7_mariadb-10.5	89.66% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.7_mariadb-10.6	89.66% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.7_mariadb-10.9	89.66% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.7_mysql-5.7	90.41% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.7_mysql-8.0	91.88% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.8_mariadb-10.10	90.25% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.8_mariadb-10.11	90.25% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.8_mariadb-10.4	90.27% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.8_mariadb-10.5	90.25% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.8_mariadb-10.6	90.25% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.8_mariadb-10.9	90.25% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.8_mysql-5.7	90.96% <100.00%> (+0.01%)	:arrow_up:
ubuntu-latest_3.8_mysql-8.0	92.33% <100.00%> (+0.01%)	:arrow_up:
ubuntu-latest_3.9_mariadb-10.10	90.09% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.9_mariadb-10.11	90.09% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.9_mariadb-10.4	90.11% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.9_mariadb-10.5	90.09% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.9_mariadb-10.6	90.09% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.9_mariadb-10.9	90.09% <100.00%> (+0.02%)	:arrow_up:
ubuntu-latest_3.9_mysql-5.7	90.79% <100.00%> (+0.01%)	:arrow_up:
ubuntu-latest_3.9_mysql-8.0	92.17% <100.00%> (+0.01%)	:arrow_up:

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