Redefined Glowing Blocks

Redefined Glowing Blocks is an API for developers to make blocks glowing.
Supported Minecraft versions: 1.20+ (due to use of block displays)
Dependencies: PacketEvents
Any block could glow as full block or as depending on its texture.

Example usage (this is your main class implementing listener):

GlowingBlocksAPI gbapi;
        
@Override
public void onEnable() {
    gbapi = new GlowingBlocksAPI(this);
    getServer().getPluginManager().registerEvents(this, this);
    // rest of your code
}

@EventHandler
public void onPlayerInteract(PlayerInteractEvent event) {
    Player player = event.getPlayer();
    Block block = event.getClickedBlock();

    gbapi.setGlowing(player, block, NamedTextColor.BLUE);

    getServer().getScheduler().runTaskLater(this, () ->
        gbapi.unsetGlowing(player, block),
    20);
}

Additionally, you can pass FullBlockEnum to change how glowing will affect block.
FullOpaque - uses shulkers (can place blocks on them)
FullTransparent - uses magma cubes (can't place blocks on them)
Nonfull - uses display block (can place blocks on them)
Detect - detects based on block type

Replace VERSION with current version.
Gradle:

repositories {
    mavenCentral()
    maven { url "https://jitpack.io" }
}
   
dependencies {
    implementation 'com.github.MsMaciek123:RedefinedGlowingBlocks:VERSION'
}

Maven:

<repositories>
    <repository>
        <id>jitpack.io</id>
        <url>https://jitpack.io</url>
    </repository>
</repositories>

<dependency>
    <groupId>com.github.MsMaciek123</groupId>
    <artifactId>RedefinedGlowingBlocks</artifactId>
    <version>VERSION</version>
</dependency>