feat(datatables): add tooltip support and custom button helper

[sebastienheyd]

Summary

This PR improves upon #104 by adding tooltip support to DataTable buttons with several enhancements:

Features

• ✅ Add tooltip functionality to datatable buttons with conditional rendering
• ✅ Introduce custom() static helper method for simplified button creation
• ✅ Smart parameter ordering: icon before tooltip for better ergonomics
• ✅ Intelligent empty icon handling to prevent unnecessary HTML generation

Improvements over #104

• Parameter order: icon comes before tooltip (more intuitive)
• Conditional rendering: Tooltip only added when non-empty (no title="")
• Smart icon handling: Empty icons don't generate HTML markup
• PSR-12 compliance: Single blank line spacing
• Test coverage: 8 comprehensive tests included

API Usage

// Method 1: Fluent API
Button::add('My button')
    ->route('users.show', $user->id)
    ->tooltip('View details')
    ->icon('eye')
    ->color('primary')
    ->make();

// Method 2: Custom helper (icon before tooltip)
Button::custom(
    'users.edit',           // route
    $user->id,              // args
    'pencil-alt',           // icon (3rd parameter)
    'Edit user profile',    // tooltip (4th parameter)
    'warning',              // color
    ['data-action' => 'edit'] // attributes
);

Test Results

All 228 tests pass with 735 assertions.

Closes #104

[sebastienheyd]

Closing this PR in favor of a cleaner branch. Reopening as a new PR based directly on master without the original #104 commits.

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Accept mixed route args in Button::custom

Button::custom() narrows $args to array|string, which breaks the model-object usage that existing helpers already support (for example Button::edit(..., $role) in the codebase). In PHP this can coerce an Eloquent model to a JSON string via __toString(), so route() receives the wrong parameter value and generates incorrect URLs; for non-stringable objects it will throw a TypeError. Matching the mixed behavior used by show/edit/delete avoids this regression.

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