Upgrade Python language bindings to v1.3.1

[blueloveTH]

The previous pr is #2353 (3 weeks ago)

What's changed from v1.3.0 to v1.3.1

1. fix a bug of type names
2. improve f-string. It supports {{ and }} escape now
3. rename easing functions. Now names are like easing.Linear and easing.OutQuad
4. allow complex assignment in class definition
5. add str.splitlines()
6. fix [BUG] Memory leak in SStream::str() pocketpy/pocketpy#179
7. add csv module

New module csv

v1.3.1 introduces csv module with csv.reader and csv.DictReader for parsing csv files.
The module is a compatible subset of cpython's csv which supports common csv format with linebreaks.

import csv
def test(data: str, expected):
    ret: list = csv.reader(data.splitlines())
    assert ret==expected, f"Expected {expected}, got {ret}"

test("""a,b,c
1,2,3
""",  [['a', 'b', 'c'], ['1', '2', '3']])

test("""a,b,c
1,2,"3"
""",  [['a', 'b', 'c'], ['1', '2', '3']])

test("""a,b,c
1,2,"3,,"
""",  [['a', 'b', 'c'], ['1', '2', '3,,']])

test("""a,b,c
1,2,'3'
""",  [['a', 'b', 'c'], ['1', '2', '\'3\'']])

test('''a,b,c
1,2,"123"""
''',  [['a', 'b', 'c'], ['1', '2', '123"']])

test("""a,b,c,
1,2,3,
""",  [['a', 'b', 'c', ''], ['1', '2', '3', '']])

test("""a,b ,c,
1,"22""33",3
""",  [['a', 'b ', 'c', ''], ['1', '22"33', '3']])

# newline
test('''a,b,c
1,2,"3,
  4"
5,"a,""
b",7
''',  [['a', 'b', 'c'], ['1', '2', '3,\n  4'], ['5', 'a,"\nb', '7']])

ret: list[dict] = csv.DictReader("""a,b,c
1,2,3
"4",5,6
""".splitlines())

assert ret==[
    {'a': '1', 'b': '2', 'c': '3'},
    {'a': '4', 'b': '5', 'c': '6'},
]

This upgrade has no break change and it should not break anything.