Convert dependency-submission action to Typescript

Instead of being a thin wrapper over `setup-gradle`, the `dependency-submission`
action is now a fully-fledged action sharing implementation with `setup-gradle`.

sources/src/dependency-submission/main.ts

@@ -0,0 +1,58 @@
+import * as core from '@actions/core'
+
+import * as setupGradle from '../setup-gradle'
+import * as execution from '../execution'
+import * as provisioner from '../provision'
+import * as layout from '../repository-layout'
+import {parseArgsStringToArgv} from 'string-argv'
+import {DependencyGraphOption, getDependencyGraphOption} from '../input-params'
+
+/**
+ * The main entry point for the action, called by Github Actions for the step.
+ */
+export async function run(): Promise<void> {
+    try {
+        if (process.env['GRADLE_BUILD_ACTION_SETUP_COMPLETED']) {
+            core.setFailed(
+                'The dependency-submission action cannot be used in the same Job as the setup-gradle action. Please use a separate Job for dependency submission.'
+            )
+            return
+        }
+
+        // Configure Gradle environment (Gradle User Home)
+        await setupGradle.setup()
+
+        if (getDependencyGraphOption() === DependencyGraphOption.DownloadAndSubmit) {
+            // No execution to perform
+            return
+        }
+
+        // Download and install Gradle if required
+        const executable = await provisioner.provisionGradle()
+
+        // Only execute if arguments have been provided
+        const additionalArgs = core.getInput('additional-arguments')
+        const executionArgs = `
+              -Dorg.gradle.configureondemand=false
+              -Dorg.gradle.dependency.verification=off
+              -Dorg.gradle.unsafe.isolated-projects=false
+              :ForceDependencyResolutionPlugin_resolveAllDependencies
+              ${additionalArgs}
+        `
+
+        const args: string[] = parseArgsStringToArgv(executionArgs)
+        core.info(args.join('!!!'))
+        const buildRootDirectory = layout.buildRootDirectory()
+        await execution.executeGradleBuild(executable, buildRootDirectory, args)
+    } catch (error) {
+        core.setFailed(String(error))
+        if (error instanceof Error && error.stack) {
+            core.info(error.stack)
+        }
+    }
+
+    // Explicit process.exit() to prevent waiting for hanging promises.
+    process.exit()
+}
+
+run()