Support scientific notation (YeX)

[swelborn]

Describe the bug
Scientific notation in json converts to str in model:

class Model(BaseModel):
    hello: str

To Reproduce

Example json:

{
    "hello": 1e-9
}

Used commandline:

$ datamodel-codegen --input-file-type json --input gen/test-meta.json --output gen/test_scientific_notation.py

Expected behavior
Expected float.

Version:

• OS: macOS
• Python version: 3.11.9
• datamodel-code-generator version: 0.25.6