Dropdown/MultiSelect: Add filterDelay property for debounce

[caiorodr]

Describe the bug

Currently, the Dropdown component in PrimeReact lacks a delay property, which would be helpful when the filter property is enabled. This feature is particularly useful to prevent unnecessary executions of the filtering logic during rapid typing, optimizing performance for large datasets or applications making frequent API requests.

Reproducer

No response

System Information

System:
    OS: Windows 11 10.0.26100
    CPU: (16) x64 AMD Ryzen 7 5700X3D 8-Core Processor
    Memory: 4.74 GB / 15.93 GB
  Binaries:
    Node: 20.16.0 - C:\Program Files\nodejs\node.EXE
    Yarn: 1.22.22 - C:\Program Files\nodejs\yarn.CMD
    npm: 10.8.1 - C:\Program Files\nodejs\npm.CMD
  Browsers:
    Edge: Chromium (131.0.2903.112)
  npmPackages:
    primereact: ^10.8.2 => 10.8.2 
    react: ^18.2.0 => 18.3.1

Steps to reproduce the behavior

Steps to Reproduce:

1. Use the Dropdown component with the filter property enabled.
2. Type quickly in the input field.
3. Observe that there is no way to add a delay to control the frequency of the filtering logic execution.

Expected behavior

When the filter property is enabled, the component should allow configuring a delay, similar to other filterable components in PrimeReact, such as the DataTable.

Current Behavior:
There is no support for a delay property, resulting in the immediate execution of the filtering logic with every typing event.

Proposed Solution:
Add an optional delay property to the Dropdown component.

Type: number
Description: Specifies the delay time in milliseconds before executing the filter logic after a typing event.
Default Value: 0 (current behavior, no delay).

<Dropdown
value={selectedValue}
options={options}
filter
delay={300}
onChange={(e) => setSelectedValue(e.value)}
/>

[melloware]

PR submitted.