[Jetcaster] Replace Material Icons with drawable resources

[JolandaVerhoef]

This commit replaces all usages of androidx.compose.material.icons with equivalent drawable resources. This change is applied across the mobile, wear, and tv modules.

The primary motivation for this change is to reduce the dependency on the androidx.compose.material.icons library and to provide more explicit control over the visual assets used in the application.

Specific changes include:

• Removing dependencies on androidx.material.icons.core and androidx.compose.material.iconsExtended from build.gradle files.
• Replacing ImageVector instances (e.g., Icons.Default.Check, Icons.AutoMirrored.Filled.PlaylistAdd) with painterResource(id = R.drawable.*) calls in various Composable functions.
• Adding new XML drawable resources for icons that were previously sourced from the Material Icons library. These include icons such as ic_add.xml, ic_remove.xml, ic_play_arrow.xml, ic_pause.xml, etc.
• Updating ButtonWithIcon composable in the tv module to accept a @DrawableRes iconId: Int instead of an ImageVector.
• Minor cleanup in Jetcaster/mobile/src/main/res/drawable/genres.xml by removing the android:tint attribute.
• Minor cleanup in Jetcaster/mobile/src/main/res/values/strings.xml by removing an extra space.

[gemini-code-assist]

Summary of Changes

Hello @JolandaVerhoef, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request undertakes a significant refactoring of the application's icon system. The primary goal is to reduce reliance on the androidx.compose.material.icons library by replacing its usage with custom drawable resources. This change provides greater control over visual assets and streamlines the icon management across the mobile, wear, and tv modules.

Highlights

• Dependency Reduction: Removed direct dependencies on androidx.compose.material.icons.core and androidx.compose.material.iconsExtended across the mobile, wear, and tv modules, reducing the application's external library footprint.
• Icon System Refactor: Replaced all instances of ImageVector (e.g., Icons.Default.Check) with painterResource(id = R.drawable.*) calls in Composable functions, standardizing icon usage to local drawable resources.
• New Drawable Resources: Introduced a comprehensive set of new XML drawable resources (e.g., ic_add.xml, ic_play_arrow.xml) to provide custom icons that were previously sourced from the Material Icons library.
• API Adaptation in TV Module: Modified the ButtonWithIcon composable in the tv module to accept a @DrawableRes iconId: Int instead of an ImageVector, aligning its API with the new drawable-based icon approach.
• Minor Code Cleanups: Performed small cleanups, including removing the android:tint attribute from Jetcaster/mobile/src/main/res/drawable/genres.xml and an extra space in Jetcaster/mobile/src/main/res/values/strings.xml.

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[gemini-code-assist]

Code Review

This is a great refactoring to remove the dependency on material-icons-extended and switch to local drawable resources. The changes are extensive and well-executed across the mobile, tv, and wear modules.

I've found a couple of minor issues with incorrect icon replacements that affect UI correctness. Please take a look at my comments. Once those are addressed, this PR should be good to go.

Great work on this large-scale cleanup!