Configure Gradle User Home for dependency-graph

Instead of requiring an action step to generate the graph, configure Gradle User Home
so that subsequent Gradle invocations can generate a graph. Any generated graph files
are uploaded as artifacts on job completion.

- Construct job.correlator from workflow/job/matrix
- Export job.correlator as an environment var
- Upload artifacts at job completion in post-action step
- Specify the location of dependency graph report
- Only apply dependency graph init script when explicitly enabled

src/setup-gradle.ts

@@ -6,6 +6,7 @@ import * as os from 'os'
 import * as caches from './caches'
 import * as layout from './repository-layout'
 import * as params from './input-params'
+import * as dependencyGraph from './dependency-graph'
 
 import {logJobSummary, writeJobSummary} from './job-summary'
 import {loadBuildResults} from './build-results'
@@ -36,6 +37,10 @@ export async function setup(): Promise<void> {
     await caches.restore(gradleUserHome, cacheListener)
 
     core.saveState(CACHE_LISTENER, cacheListener.stringify())
+
+    if (params.isDependencyGraphEnabled()) {
+        dependencyGraph.prepare()
+    }
 }
 
 export async function complete(): Promise<void> {
@@ -58,6 +63,10 @@ export async function complete(): Promise<void> {
     } else {
         logJobSummary(buildResults, cacheListener)
     }
+
+    if (params.isDependencyGraphEnabled()) {
+        dependencyGraph.uploadDependencyGraphs()
+    }
 }
 
 async function determineGradleUserHome(): Promise<string> {