pygments: add typing annotation for missing base files of pygments

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Diff from mypy_primer, showing the effect of this PR on open source code:

pwndbg (https://github.com/pwndbg/pwndbg)
+ pwndbg/integration/binja.py: note: In member "decompile" of class "BinjaProvider":
+ pwndbg/integration/binja.py:503: error: No overload variant of "format" matches argument types "list[tuple[Any, str]]", "Terminal256Formatter[str]"  [call-overload]
+ pwndbg/integration/binja.py:503: note: Possible overload variants:
+ pwndbg/integration/binja.py:503: note:     def [_T: (str, bytes)] format(tokens: Iterator[tuple[_TokenType, str]], formatter: Formatter[_T], outfile: SupportsWrite[_T]) -> None
+ pwndbg/integration/binja.py:503: note:     def [_T: (str, bytes)] format(tokens: Iterator[tuple[_TokenType, str]], formatter: Formatter[_T], outfile: None = ...) -> _T
+ pwndbg/integration/binja.py:509: error: No overload variant of "format" matches argument types "list[tuple[Any, str]]", "Terminal256Formatter[str]"  [call-overload]
+ pwndbg/integration/binja.py:509: note: Possible overload variants:
+ pwndbg/integration/binja.py:509: note:     def [_T: (str, bytes)] format(tokens: Iterator[tuple[_TokenType, str]], formatter: Formatter[_T], outfile: SupportsWrite[_T]) -> None
+ pwndbg/integration/binja.py:509: note:     def [_T: (str, bytes)] format(tokens: Iterator[tuple[_TokenType, str]], formatter: Formatter[_T], outfile: None = ...) -> _T

sphinx (https://github.com/sphinx-doc/sphinx)
+ sphinx/highlighting.py:39: error: Unused "type: ignore" comment  [unused-ignore]
+ sphinx/highlighting.py:39:5: error: Cannot assign to a method  [method-assign]
+ sphinx/highlighting.py:39:5: note: Error code "method-assign" not covered by "type: ignore" comment
+ sphinx/highlighting.py:39:35: error: Incompatible types in assignment (expression has type "classmethod[Any, [Any], Any]", variable has type "Callable[[Any], GenericAlias]")  [assignment]
+ sphinx/highlighting.py:39:35: note: Error code "assignment" not covered by "type: ignore" comment

alectryon (https://github.com/cpitclaudel/alectryon)
+ alectryon/pygments_lexer.py:456: error: Dict entry 3 has incompatible type "str": "list[tuple[str | Any, ...]]"; expected "str": "list[tuple[str | words, _TokenType | Iterator[tuple[int, _TokenType, str]] | Callable[[Lexer, _PseudoMatch, LexerContext], Iterator[tuple[int, _TokenType, str]]]] | tuple[str | words, _TokenType | Iterator[tuple[int, _TokenType, str]] | Callable[[Lexer, _PseudoMatch, LexerContext], Iterator[tuple[int, _TokenType, str]]], str] | include | default]"  [dict-item]
+ alectryon/pygments_lexer.py:457: error: Dict entry 4 has incompatible type "str": "list[tuple[str | Any, ...]]"; expected "str": "list[tuple[str | words, _TokenType | Iterator[tuple[int, _TokenType, str]] | Callable[[Lexer, _PseudoMatch, LexerContext], Iterator[tuple[int, _TokenType, str]]]] | tuple[str | words, _TokenType | Iterator[tuple[int, _TokenType, str]] | Callable[[Lexer, _PseudoMatch, LexerContext], Iterator[tuple[int, _TokenType, str]]], str] | include | default]"  [dict-item]
+ alectryon/pygments_lexer.py:477: error: Dict entry 7 has incompatible type "str": "list[object]"; expected "str": "list[tuple[str | words, _TokenType | Iterator[tuple[int, _TokenType, str]] | Callable[[Lexer, _PseudoMatch, LexerContext], Iterator[tuple[int, _TokenType, str]]]] | tuple[str | words, _TokenType | Iterator[tuple[int, _TokenType, str]] | Callable[[Lexer, _PseudoMatch, LexerContext], Iterator[tuple[int, _TokenType, str]]], str] | include | default]"  [dict-item]
+ alectryon/pygments_lexer.py:490: error: Dict entry 9 has incompatible type "str": "list[object]"; expected "str": "list[tuple[str | words, _TokenType | Iterator[tuple[int, _TokenType, str]] | Callable[[Lexer, _PseudoMatch, LexerContext], Iterator[tuple[int, _TokenType, str]]]] | tuple[str | words, _TokenType | Iterator[tuple[int, _TokenType, str]] | Callable[[Lexer, _PseudoMatch, LexerContext], Iterator[tuple[int, _TokenType, str]]], str] | include | default]"  [dict-item]
+ alectryon/pygments_lexer.py:491: error: Dict entry 10 has incompatible type "str": "list[object]"; expected "str": "list[tuple[str | words, _TokenType | Iterator[tuple[int, _TokenType, str]] | Callable[[Lexer, _PseudoMatch, LexerContext], Iterator[tuple[int, _TokenType, str]]]] | tuple[str | words, _TokenType | Iterator[tuple[int, _TokenType, str]] | Callable[[Lexer, _PseudoMatch, LexerContext], Iterator[tuple[int, _TokenType, str]]], str] | include | default]"  [dict-item]
+ alectryon/pygments_lexer.py:492: error: Dict entry 11 has incompatible type "str": "list[object]"; expected "str": "list[tuple[str | words, _TokenType | Iterator[tuple[int, _TokenType, str]] | Callable[[Lexer, _PseudoMatch, LexerContext], Iterator[tuple[int, _TokenType, str]]]] | tuple[str | words, _TokenType | Iterator[tuple[int, _TokenType, str]] | Callable[[Lexer, _PseudoMatch, LexerContext], Iterator[tuple[int, _TokenType, str]]], str] | include | default]"  [dict-item]