Implemented switch direction of graph in all 4 direction

[donutAnees]

Checklist

• [x] I have described the changes
• [x] I have linked to any relevant GitHub issues, if applicable
• [x] Documentation in doc/ has been updated
• [x] All new code is licensed under GPLv3

Description

Before

Only two directions were possible, which was from right to left and down to up for graph displaying.

After

The changes made now will allow for the following directions

1. Right to Left
2. Left to Right
3. Top to Down
4. Down to Top

To implement this, use the flags -x to invert along the x axis and -y to invert along the y axis.

Example

downspeedgraph en0 50,280 ADFF2F 32CD32 -t -x -y upspeedgraph en0 50,280 ADFF2F 32CD32 -t -y

More Outputs

Fixes #890

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