Output for first version of `mkfh.m`

in Matlab R2021a:

```
>> test_mkfh
fh =
function_handle with value:
@mkfh/f2
ans =
24
info =
struct with fields:
function: 'mkfh/f2'
type: 'nested'
file: '/home/siko1056/Downloads/mkfh.m'
workspace: {[1×1 struct]}
ans =
1×1 cell array
{1×1 struct}
>> ans{:}
ans =
struct with fields:
fh: @mkfh/f2
a: 3
b: 5
c: 7
>> info.workspace{:}
ans =
struct with fields:
fh: @mkfh/f2
a: 3
b: 5
c: 7
```

and for the second version:

```
>> test_mkfh
fh =
function_handle with value:
@(y)f1(@(z)z^2+b*y,y)+c
ans =
24
info =
struct with fields:
function: '@(y)f1(@(z)z^2+b*y,y)+c'
type: 'anonymous'
file: '/home/siko1056/Downloads/mkfh.m'
workspace: {[1×1 struct]}
within_file_path: ''
ans =
1×1 cell array
{1×1 struct}
>> ans{:}
ans =
struct with fields:
f1: @(f,x)f(x)+a
b: 5
c: 7
>> info.workspace{:}
ans =
struct with fields:
f1: @(f,x)f(x)+a
b: 5
c: 7
```