RSS-FEED: Add option to show only when unread

[NullSeile]

Adds the option to hide the bar widget when there are no unread posts.

[github-actions]

@lokize - this PR modifies your plugin. Please review when you have a chance.

[github-actions]

Automatic Code Quality Review

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File: rss-feed/Settings.qml

• (L) Line 159: When it comes to translations there is no need for fallback values. From: pluginApi?.tr("example") || "value". To: pluginApi?.tr("example")

+            label: pluginApi?.tr("settings.showOnlyWhenUnread", "Show Only When Unread") || "Show Only When Unread"

• (L) Line 160: When it comes to translations there is no need for fallback values. From: pluginApi?.tr("example") || "value". To: pluginApi?.tr("example")

+            description: pluginApi?.tr("settings.showOnlyWhenUnreadDesc", "Only show the widget when there are unread articles") || "Only show the widget when there are unread articles"

[NullSeile]

I was wondering if i should fix these problems, as they are from previous commits.

If you want me to, i can very much do so.

[spiros132]

Please do fix the problems if you can :)

[NullSeile]

I've fixed the translations!