feat(arcsinh_normalization_template): add arcsinh_normalization_templ…

[fangliu117]

…ate function and unit tests

[Copilot]

Pull Request Overview

This PR adds a new arcsinh normalization template function with comprehensive unit tests, implementing platform-agnostic functionality converted from NIDAP.

• Adds arcsinh_normalization_template.py with JSON parameter parsing and data transformation capabilities
• Implements comprehensive unit tests covering I/O workflows, parameter validation, and function calls
• Provides CLI interface and flexible save/return options for both file-based and in-memory workflows

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
src/spac/templates/arcsinh_normalization_template.py	Main template implementation with JSON parameter parsing, data transformation, and flexible output handling
tests/templates/test_arcsinh_normalization_template.py	Comprehensive test suite with mock data generation, I/O testing, and parameter validation

Comments suppressed due to low confidence (1)

src/spac/templates/arcsinh_normalization_template.py:101

• Missing closing parenthesis for the arcsinh_transformation function call. The function call starting at line 93 is missing its closing parenthesis.

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