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GH-37628: [MATLAB] Implement `isequal` for the `arrow.tabular.Table` MATLAB class (#37629)



### Rationale for this change

Following on to #37474, #37446, #37525,  and  #37627, we should implement `isequal` for the arrow.tabular.Table` MATLAB class.

### What changes are included in this PR?

1. Add new function `arrow.internal.tabular.isequal` that both `arrow.tabular.RecordBatch` and `arrow.tabular.Table` can use to implement their `isequal` methods.
2. Modified `arrow.tabular.RecordBatch` to use the new `isequal` package function to implement  its `isequal` method.
3. Implemented the `isequal` method for `arrow.tabular.Table` using the new `isequal` package function.

### Are these changes tested?

Yes, added `isequal` unit tests to `tTable.m`

### Are there any user-facing changes?

Yes. Users can now compare `arrow.tabular.Table`s using `isequal`:

```matlab
>> t1 = table(1, "A", false, VariableNames=["Number",  "String", "Logical"]);
>> t2 = table([1; 2], ["A"; "B"], [false; false], VariableNames=["Number",  "String", "Logical"]); 
>> tbl1 = arrow.table(t1);
>> tbl2 = arrow.table(t2);
>> tbl3 = arrow.table(t1);

>> isequal(tbl1, tbl2)

ans =

  logical

   0

>> isequal(tbl1, tbl3)

ans =

  logical

   1
```

* Closes: #37628

Authored-by: Sarah Gilmore <sgilmore@mathworks.com>
Signed-off-by: Kevin Gurney <kgurney@mathworks.com>