FIR: introduce declaration origin for binary classes from source module

in particular for incremental compilation when module is only partially
recompiled.
#KT-49750 fixed

compiler/fir/tree/src/org/jetbrains/kotlin/fir/declarations/FirDeclarationOrigin.kt

@@ -8,6 +8,7 @@ package org.jetbrains.kotlin.fir.declarations
 sealed class FirDeclarationOrigin(private val displayName: String? = null, val fromSupertypes: Boolean = false, val generated: Boolean = false) {
     object Source : FirDeclarationOrigin()
     object Library : FirDeclarationOrigin()
+    object Precompiled : FirDeclarationOrigin() // currently used for incremental compilation
     object BuiltIns : FirDeclarationOrigin()
     object Java : FirDeclarationOrigin()
     object Synthetic : FirDeclarationOrigin()