[Analysis API] introduce KtDestructuringDeclarationSymbol to represent a destructuring declaration

Mainly needed to avoid "Cannot build symbol for KtDestructuringDeclaration" from `KtSymbolProvider.getSymbol` on `KtDestructuringDeclaration`.

analysis/analysis-api/testData/symbols/singleSymbolByPsi/destructuring/destructuringDeclaration.kt

@@ -0,0 +1,15 @@
+// LOOK_UP_FOR_ELEMENT_OF_TYPE: KtDestructuringDeclaration
+// DO_NOT_CHECK_NON_PSI_SYMBOL_RESTORE
+
+data class X(val a: Int, val b: Int)
+
+fun main(x: X) {
+
+    <expr>
+    @AAA("y")
+    val (@BBB("aaa") a, @BBB("bbb") b) = x
+    </expr>
+}
+
+annotation class AAA(val value: String)
+annotation class BBB(val value: String)