fix: string slice support in populate

[Akalanka47000]

Summary by Sourcery

Enable Populate to accept string slices and various single-argument formats, and expand tests accordingly

Bug Fixes:

• Fix Populate to recognize and handle []string inputs and properly split comma- or space-separated strings

Enhancements:

• Refactor Populate to use a type switch for single-argument parsing of string and slice inputs

Tests:

• Restructure and extend Populate tests to cover variadic arguments, string slices, comma/space-separated strings, and both BSON and model field names

[sourcery-ai]

Reviewer's Guide

This PR updates the Populate method to accept a slice of strings and refines its parsing of comma- or space-separated field names, and adds comprehensive tests covering these new input formats.

Class diagram for updated Populate method input handling

classDiagram
    class Model {
        +Populate(values ...any) Model[T]
    }
    Model : +populate(value any) Model[T]
    note for Model "Populate now accepts string, []string, or comma/space-separated string input"

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File-Level Changes

Change	Details	Files
Enhance Populate to support []string and improved string parsing	Add a type switch on the single argument to detect []string vs string Extract parts from comma- or space-separated strings using FieldsFunc Iterate over parts to invoke m.populate for each field	core/model_populate.go
Expand tests to cover new Populate input formats	Rename existing test description for variadic arguments Introduce a single-argument test block with nested Convey cases Test Populate with []string input using both bson and model field names Test Populate with space- and comma-separated strings using both name styles	tests/core_read_populate_test.go

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

📢 Thoughts on this report? Let us know!

[sourcery-ai]

Hey @Akalanka47000 - I've reviewed your changes and they look great!

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