[TIMOB-12145] kroll.writeSnapshot method for heap dump

[drauggres]

JIRA: https://jira.appcelerator.org/browse/TIMOB-12145

var path = Ti.Filesystem.tempDirectory.replace('file://', '') +
  '/' + Date.now() + '.heapsnapshot';
if (kroll.writeSnapshot(path)) {
  console.log('Heap snapshot successfully dumped to', path);
} else {
  console.error('Failed to dump heap snapshot to', path);
}

[sgtcoolguy]

I assume this is sort of a port of this node native module? https://github.com/bnoordhuis/node-heapdump/blob/master/src/heapdump.cc

It looks like a nice low-level utility to inspecting state when imported into Chrome's dev tools...

Just thinking out loud here:
Are we sure we want this in the core of the SDK off the kroll object? Maybe it could be an android native module like the package above is a node module?

[drauggres]

Obsolete.
Steps for taking js heapsnapshot in Ti SDK 7:

1. run ti build with --debug-host localhost:8989
2. open chrome-devtools:// link in chrome/chromium
3. in Memory tab click Take snapshot

I think thats enough for debugging purposes.