updated setupGuideLayout in abstract class PSLabSensor to hide image if not available in a sensor's bottomsheet guide

[Ekagra]

Fixes: [empty imageview is sensors bottomsheet guide]

Changes: [updated setupGuideLayout in abstract class PSLabSensor to hide image if not available in a sensor's bottomsheet guide]

Screenshot/s for the changes:
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Checklist: [Please tick following check boxes with [x] if the respective task is completed]

• I have used resources from strings.xml, dimens.xml and colors.xml without hard-coding them
• No modifications done at the end of resource files strings.xml, dimens.xml or colors.xml
• I have reformatted code in every file included in this PR [CTRL+ALT+L]
• My code does not contain any extra lines or extra spaces
• I have requested reviews from other members

[asaikarthikeya]

In every other instrument this space is filled with a PSlab hardware related image , I think adding a image would be better since it improve regularity in app . This would be a optimal solution till we get a image. Thank you.

[CloudyPadmal]

Add an image instead of hiding the view.

[CloudyPadmal]

Also try to shorten the PR title

[Ekagra]

@CloudyPadmal what image should I add?

[Ekagra]

The view is only hidden if there's no image to display like right now, do you want me to add a placeholder?