KTIJ-26276 [Analysis API] Do not consider single aliased import from the same package as unused

Even when the aliased import comes from the same package, it cannot be
removed, because it will break the code

Also, add more tests for the imports coming from the same package

^KTIJ-26276 Fixed

analysis/analysis-api/testData/components/importOptimizer/analyseImports/unusedAliasedImportFromSamePackage.imports

@@ -0,0 +1,2 @@
+test.SamePackage as Aliased
+test.samePackage as aliased

analysis/analysis-api/testData/components/importOptimizer/analyseImports/unusedAliasedImportFromSamePackage.kt

@@ -0,0 +1,12 @@
+package test
+
+import test.SamePackage as Aliased
+import test.samePackage as aliased
+
+class SamePackage
+
+fun samePackage() {}
+
+fun usage(a: SamePackage) {
+    samePackage()
+}

analysis/analysis-api/testData/components/importOptimizer/analyseImports/unusedImportsFromSamePackage.imports

@@ -0,0 +1,2 @@
+test.SamePackage
+test.samePackage

analysis/analysis-api/testData/components/importOptimizer/analyseImports/unusedImportsFromSamePackage.kt

@@ -0,0 +1,17 @@
+// FILE: main.kt
+
+package test
+
+import test.SamePackage
+import test.samePackage
+
+fun usage(a: SamePackage) {
+    samePackage()
+}
+
+// FILE: dependency.kt
+package test
+
+class SamePackage
+
+fun samePackage() {}

analysis/analysis-api/testData/components/importOptimizer/analyseImports/usedAliasedAndRegularImportsFromSamePackage.kt

@@ -0,0 +1,20 @@
+// FILE: main.kt
+
+package test
+
+import test.SamePackage
+import test.SamePackage as Aliased
+import test.samePackage
+import test.samePackage as aliased
+
+fun usage(a: Aliased, b: SamePackage) {
+    aliased()
+    samePackage()
+}
+
+// FILE: dependency.kt
+package test
+
+class SamePackage
+
+fun samePackage() {}

analysis/analysis-api/testData/components/importOptimizer/analyseImports/usedAliasedImportsFromSamePackage.kt

@@ -0,0 +1,16 @@
+// FILE: main.kt
+package test
+
+import test.SamePackage as Aliased
+import test.samePackage as aliased
+
+fun usage(a: Aliased) {
+    aliased()
+}
+
+// FILE: dependency.kt
+package test
+
+class SamePackage
+
+fun samePackage() {}