Add PulsingText Composable for animated text appearance in loading scenarios

src/main/kotlin/org/jetbrains/plugins/template/components/PulsingText.kt

@@ -0,0 +1,46 @@
+package org.jetbrains.plugins.template.components
+
+import androidx.compose.animation.core.*
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.TextUnit
+import org.jetbrains.jewel.foundation.theme.JewelTheme
+import org.jetbrains.jewel.ui.component.Text
+
+@Composable
+fun PulsingText(
+    text: String,
+    isLoading: Boolean,
+    modifier: Modifier = Modifier,
+    color: Color = Color.White,
+    fontSize: TextUnit = JewelTheme.defaultTextStyle.fontSize,
+    fontWeight: FontWeight? = JewelTheme.defaultTextStyle.fontWeight
+) {
+    val alpha = if (isLoading) {
+        val infiniteTransition = rememberInfiniteTransition(label = "pulsing_text")
+        infiniteTransition.animateFloat(
+            initialValue = 0.3f,
+            targetValue = 1f,
+            animationSpec = infiniteRepeatable(
+                animation = tween(
+                    durationMillis = 1000,
+                    easing = FastOutSlowInEasing
+                ),
+                repeatMode = RepeatMode.Reverse
+            ),
+            label = "text_alpha"
+        ).value
+    } else {
+        1f
+    }
+
+    Text(
+        text = text,
+        color = color.copy(alpha = alpha),
+        fontSize = fontSize,
+        fontWeight = fontWeight,
+        modifier = modifier
+    )
+}