Decompose Kotlin/Java analysis (#3034)

* Extract analysis into separate modules

79 files changed, 5825 insertions, 0 deletions

diff --git a/subprojects/analysis-kotlin-descriptors/README.md b/subprojects/analysis-kotlin-descriptors/README.md
new file mode 100644
index 00000000..fbfd1c8b
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+++ b/subprojects/analysis-kotlin-descriptors/README.md
@@ -0,0 +1,8 @@
+# Analysis: Kotlin descriptors
+
+An internal descriptor-based implementation for [analysis-kotlin-api](../analysis-kotlin-api), also known as K1 or 
+"the old compiler".
+
+Contains no stable public API and must not be used by anyone directly, only via [analysis-kotlin-api](../analysis-kotlin-api).
+
+Can be added as a runtime dependency by the runner.
diff --git a/subprojects/analysis-kotlin-descriptors/api/analysis-kotlin-descriptors.api b/subprojects/analysis-kotlin-descriptors/api/analysis-kotlin-descriptors.api
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/subprojects/analysis-kotlin-descriptors/api/analysis-kotlin-descriptors.api
diff --git a/subprojects/analysis-kotlin-descriptors/build.gradle.kts b/subprojects/analysis-kotlin-descriptors/build.gradle.kts
new file mode 100644
index 00000000..3f028090
--- /dev/null
+++ b/subprojects/analysis-kotlin-descriptors/build.gradle.kts
@@ -0,0 +1,43 @@
+import org.jetbrains.DokkaPublicationBuilder
+import org.jetbrains.registerDokkaArtifactPublication
+
+plugins {
+    id("org.jetbrains.conventions.kotlin-jvm")
+    id("org.jetbrains.conventions.maven-publish")
+    id("com.github.johnrengelman.shadow")
+}
+
+dependencies {
+    implementation(projects.subprojects.analysisKotlinApi)
+    implementation(projects.subprojects.analysisKotlinDescriptors.compiler)
+    implementation(projects.subprojects.analysisKotlinDescriptors.ide)
+}
+
+tasks {
+    // There are several reasons for shadowing all dependencies in one place:
+    // 1. Some of the artifacts Dokka depends on, like com.jetbrains.intellij.java:java-psi, are not
+    //    published to Maven Central, so the users would need to add custom repositories to their build scripts.
+    // 2. There are many intertwining transitive dependencies of different versions, as well as direct copy-paste,
+    //    that can lead to runtime errors due to classpath conflicts, so it's best to let Gradle take care of
+    //    dependency resolution, and then pack everything into a single jar in a single place that can be tuned.
+    // 3. The compiler and ide modules are internal details that are likely to change, so packing everything into