Added error messages in grid function for invalid values for heights and widths

[Gythre-9]

Fix #4212
The grid function (GridLayout) now throws error messages when heights and widths of the grid are not correctly set. This ensures that users receive informative feedback when specifying incorrect values, making it easier to correct issues related to grid dimensions.

I added error messages for the following conditions:

• The sum of heights is not equal to 1.
• The sum of widths is not equal to 1.
• Widths values are not in the range (0, 1).
• Heights values are not in the range (0, 1).

I have tested these changes by providing incorrect values for heights and widths, ensuring that the error messages are triggered as expected. Additionally, I have confirmed that the function continues to work correctly with valid input and with no input at all (standard values).

[BeastyBlacksmith]

Don't worry the CI failures are mostly unrelated to these changes. However, please format your code with

using JuliaFormatter
format(["src", "test", "ext"], verbose=true)

[Gythre-9]

Ok, I have formatted the code using JuliaFormatter (or at least, I think i did). I also got rid of an extra space and an extra empty line.
Let me know if any further edits are needed!