src/goTools: allow to install dlv for arm64

Fixes #2339

Change-Id: I69f77a0257b96a7cb8840380fc5dbe983281c82b
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/417296
TryBot-Result: kokoro <[email protected]>
Run-TryBot: Hyang-Ah Hana Kim <[email protected]>
Reviewed-by: Jamal Carvalho <[email protected]>

Author: hyangah

src/goTools.ts

@@ -161,7 +161,7 @@ export function getConfiguredTools(
 	// Check if the system supports dlv, i.e. is 64-bit.
 	// There doesn't seem to be a good way to check if the mips and s390
 	// families are 64-bit, so just try to install it and hope for the best.
-	if (process.arch.match(/^(mips|mipsel|ppc64|s390|s390x|x64)$/)) {
+	if (process.arch.match(/^(mips|mipsel|ppc64|s390|s390x|x64|arm64)$/)) {
 		maybeAddTool('dlv');
 	}