refactor: Update ConnectivityCard and SpacedriveColors for Consistency

- Refactored the `ConnectivityCard` component to utilize the new `SpacedriveColors` for text and background colors, enhancing visual consistency across the UI.
- Adjusted color definitions in `SpacedriveColors` to provide a more cohesive design, including updates to primary, secondary, and tertiary background colors.
- Improved the layout and spacing in `JobRowView` and `JobMonitorView` for better user experience.
- Introduced a new `SettingsContentView` section for displaying the `ConnectivityCard`, integrating service status into the settings interface.

core/src/infra/job/manager.rs

@@ -697,7 +697,6 @@ impl JobManager {
 		job_infos
 	}
 
-
 	/// List all jobs with a specific status (unified query)
 	pub async fn list_jobs(&self, status: Option<JobStatus>) -> JobResult<Vec<JobInfo>> {
 		use sea_orm::QueryFilter;

core/src/ops/media/thumbnail/job.rs

@@ -80,7 +80,6 @@ impl crate::infra::job::traits::DynJob for ThumbnailJob {
 	fn job_name(&self) -> &'static str {
 		Self::NAME
 	}
-
 }
 
 /// Output from thumbnail generation job
@@ -497,4 +496,3 @@ impl ThumbnailJob {
 		Ok(entries)
 	}
 }
-