fix: add support for decimal min and max #326

[anessi]

Description

Adds support for decimal min and max, see #326

Fixes the issue in #427

Related issue(s)
Fixes #326

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[Tenischev]

@anessi Thank you for the contribution!
Could you please cover this with test? Feel free to modify for example additional-type-formats.yml or add new API mock

[anessi]

@Tenischev : I added a test and also checked that the generated Java code compiles.

The testing behaviour is quite strange to me as I sometimes have to run the test multiple times, that it succeeds. This gets fixed by adding --runInBand --no-cache, however it seems there are issues with the line breaks in the template snapshots.
I'm executing docker run --rm -it -v "$PWD":/app -w /app node:24 bash from the repository root to run it in an isolated environment and then run npm install and npm test -- --runInBand --no-cache -u.

I'm not a JS developer, so maybe I'm doing something wrong.