Waveshare 7.5 Bugfixes

[kroehrl]

Hey,

this PR uses the getUTF8Width function in the drawString Method to determine the width of the Strings which should be drawn to the Display.

Furthermore this PR fixes other small cosmetic issues like

• the wrong orientation/misalignment of the SE and SW Symbols in the DisplayWindSection
• Fixes the two top horizontal lines where they were off by one pixel
• fixes the y-axis in the DrawGraph-Function (previously values like 0.0 or 5.0 were misaligned)
• In the DisplayPrecipitationSection now the same snowflakes like in the weather-symobls are used (instead of '*'-Symbols)

That's it :) Maybe the one or other thing could also be used for other display sizes. But I don't have such displays to test, thats why I only focused on the (old) 7.5 display.

[G6EJD]

First of all, thank for doing this, it is much appreciated. Before I commit the changes can you confirm you have tested the changes.

[kroehrl]

Yes I did with an Waveshare ESP32 and an Waveshare 7.5 Display.

See the attached file. :)

Picture with English Language, implemented with German Language (which is fine too). Anything else what should be tested from your point of view? ;)

[G6EJD]

Thank you