KT-57468 Kotlin assignment plugin: operation name cannot be found

The problem results in broken import quick fix and import optimizer on
the IDE side [1].

`AssignResolutionAltererExtension` introduced a possibility to override
 resolution of assignment statements. The inconsistency though is
 that `KtSimpleNameReference.getResolvesByNames` doesn't return a name
 for the overridden `=`. Kotlin as a language doesn't support this [2].

This commit eliminates the drawback above:
1. It fixes the name `assign` the `=` can be resolved to [3].
   This eliminates the need to search for the name, bypassing the
   plugins.
2. `KtSimpleNameReference.getResolvesByNames` returns `assign` among
   other names in case it deals with binary `=` and assignment is
   resolved.
3. `KtCompilerPluginsProvider` was extended to check plugins' presence.
   K1 implementation added.

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[1]: https://youtrack.jetbrains.com/issue/KTIJ-24390
[2]: OperatorConventions.getNameForOperationSymbol
     https://kotlinlang.org/docs/operator-overloading.html#augmented-assignments
[3]: OperatorConventions#ASSIGN_METHOD + AssignmentPluginNames

analysis/analysis-api-fir/build.gradle.kts

@@ -15,6 +15,7 @@ dependencies {
     api(project(":compiler:fir:checkers:checkers.js"))
     api(project(":compiler:fir:checkers:checkers.native"))
     api(project(":compiler:fir:java"))
+    api(project(":compiler:fir:entrypoint"))
     api(project(":analysis:low-level-api-fir"))
     api(project(":analysis:analysis-api"))
     api(project(":analysis:analysis-api-impl-base"))

analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/references/FirSimpleNameReference.kt

@@ -75,4 +75,4 @@ internal class KtFirSimpleNameReference(
         // TODO: Implement.
         return null
     }
-}
+}