Fix width for --noweekend option of calw and calm

[msalle]

This pull request fixes calculating the width when calw/calm is used with the option --noweekend

Details

The day_width was calculated assuming 7 days a week. This is of course not correct when --noweekend is set. The variable days was already calculated in _GraphEvents, so move it to instance level and set it in __init__() and use it to calculate the correct width.

Note that this issue already existed before the width argument was fixed in #825 : e0e126e#diff-bdae32b0ae73657fd85ec3f881c2bcce2a0bfa93febd682ccc2febbb711e9cb6L150

Output before

Using a terminal width of 106 for which can completely fill both for 5 days (5*20+6 = 106) and 7 days (7*14+8 = 106).

[root@5b33b3d3ea4a gcalcli]# gcalcli calm
┌────────────────────────────────────────────────────────────────────────────────────────────────────────┐
│January 2025                                                                                            │
├──────────────┬──────────────┬──────────────┬──────────────┬──────────────┬──────────────┬──────────────┤
│Sunday        │Monday        │Tuesday       │Wednesday     │Thursday      │Friday        │Saturday      │
├──────────────┼──────────────┼──────────────┼──────────────┼──────────────┼──────────────┼──────────────┤
│              │              │              │01            │02            │03            │04            │
│              │              │              │              │              │              │              │
...
[root@5b33b3d3ea4a gcalcli]# gcalcli calm --noweekend
┌──────────────────────────────────────────────────────────────────────────┐
│January 2025                                                              │
├──────────────┬──────────────┬──────────────┬──────────────┬──────────────┤
│Monday        │Tuesday       │Wednesday     │Thursday      │Friday        │
├──────────────┼──────────────┼──────────────┼──────────────┼──────────────┤
│              │              │01            │02            │03            │
│              │              │              │              │              │
...

Output after

[root@5b33b3d3ea4a gcalcli]# gcalcli calm
┌────────────────────────────────────────────────────────────────────────────────────────────────────────┐
│January 2025                                                                                            │
├──────────────┬──────────────┬──────────────┬──────────────┬──────────────┬──────────────┬──────────────┤
│Sunday        │Monday        │Tuesday       │Wednesday     │Thursday      │Friday        │Saturday      │
├──────────────┼──────────────┼──────────────┼──────────────┼──────────────┼──────────────┼──────────────┤
│              │              │              │01            │02            │03            │04            │
│              │              │              │              │              │              │              │
...
[root@5b33b3d3ea4a gcalcli]# gcalcli calm --noweekend
┌────────────────────────────────────────────────────────────────────────────────────────────────────────┐
│January 2025                                                                                            │
├────────────────────┬────────────────────┬────────────────────┬────────────────────┬────────────────────┤
│Monday              │Tuesday             │Wednesday           │Thursday            │Friday              │
├────────────────────┼────────────────────┼────────────────────┼────────────────────┼────────────────────┤
│                    │                    │01                  │02                  │03                  │
│                    │                    │                    │                    │                    │
...

[dbarnett]

Thanks for the fix!

[msalle]

Thanks for the fix!

Thanks for the quick merge, and happy to contribute, it's a great tool!