Rename samples to follow sample naming convention

Updates intellij, sacn-receiver and twitch-pubsub to follow the sample naming convention that was documented in codeoverflow-org/nodecg-io-docs#41. They had "sample" or "integration" in them but it is in the sample directory so that is already clear.

Author: hlxid

samples/intellij-integration/extension/index.ts renamed to samples/intellij/extension/index.ts

@@ -1,5 +1,5 @@
 {
-    "name": "intellij-integration",
+    "name": "intellij",
     "version": "0.1.0",
     "private": true,
     "nodecg": {

samples/intellij-integration/package.json renamed to samples/intellij/package.json

@@ -1,5 +1,5 @@
 {
-    "name": "sacn-receiver-sample",
+    "name": "sacn-receiver",
     "version": "0.1.0",
     "description": "Example nodecg-io-sacn-receiver Bundle. Receives data via sACN",
     "private": true,

samples/intellij-integration/tsconfig.json renamed to samples/intellij/tsconfig.json

@@ -1,5 +1,5 @@
 {
-    "name": "pubsubsample",
+    "name": "twitch-pubsub",
     "version": "0.1.0",
     "private": true,
     "nodecg": {