Scripts em GrADS para a extração do centro do ciclone

[RonaldRN]

This Pull Request introduces a set of GrADS scripts designed to extract and track the center of cyclones using sea level pressure fields.
The scripts allow both manual and automatic identification of cyclone centers, providing flexibility for different analysis workflows.

- Main Features

• Manual extraction of cyclone center:
  Extrair_coords_time-lat-lon.gs
  User selects the cyclone center interactively
• Automatic extraction:
  Extrair_coords_time-lat-lon_ciclone-automatico.gs
  Script identifies the cyclone center automatically

• Visualization support:
  cbarn.gs
  Custom colorbar configuration for plotting

- Input Data
NetCDF file containing:
Sea Level Pressure (SLP), or other variables (vorticity, geopotential, etc)

- How to Use
Run in GrADS:

$ grads

• Manual method:

$ Extrair_coords_time-lat-lon.gs
"Click on the cyclone center"

• Automatic method:

$ Extrair_coords_time-lat-lon_ciclone-automatico.gs

- Output
Generates a file:
track_ciclone

This file can be used for:

• Cyclone trajectory analysis
• Further diagnostics (e.g., as an input file for use with the ATMOS-BUD software)

- Motivation
These scripts were developed to support practical activities in Synoptic Meteorology courses and to facilitate cyclone tracking using GrADS-based workflows.

The main objective is to generate the track_ciclone file, which serves as input for cyclone tracking within the ATMOS-BUD software.

- They aim to:
Simplify cyclone center identification
Provide reproducible analysis tools for students and researchers
Enable the generation of standardized track files for subsequent analysis in ATMOS-BUD

[daniloceano]

Thank you @RonaldRN for the extreme valuable addition! :)