Set is_dense parameter based on input pointcloud

Replace dirent with boost::filesystem

Co-authored-by: NAaryaman Vasishta @jammm <jem456.vasishta@gmail.com>
Shrijit Singh @shrijitsingh99 <shrijitsingh99@gmail.com>

* Fixed if/ifdef WIN32

* Replaced WIN32 with _WIN32
Co-authored-by: NKunal Tyagi <tyagi.kunal@live.com>

Update stalebot config

This alternates the behavior of the stalebot in several ways:
  * Issues can now be stale. We want the bot to chase down unconfirmed
    issues abandoned by their authors. If the author has lost interest,
    why would we care?
  * Reduce timeout until issue/pr is considered stale to 1 month. One of
    the purposes of marking issues/prs as stale is to poke their authors
    to return and finish off the work. The longer we wait, the less the
    chance they are still somewhat motivated.
  * Stale issues are automatically closed after 7 days. If the author
    did not reply to the poke, close the issue soon. It can be re-opened
    anyway, if the author awakens.
  * Only "needs: author reply" and "needs: more work" labels can become
    stale. These indicate that an action from the author is needed.

Prefer prefix ++ operators for non-primitive types

Add arguments to VS projects.

Adding octree to format list

[CUDA] Octree builder: Check for a maximum level of Morton code

Warn user if input PCD files are unorganized in tools/train_linemod_template.cpp

Fixed code accidentally casting away const-ness

Tell the compiler the variable is unused, C style

Removing undefined behavior and stricter checks in console arg parsing

replace throw () by noexcept

Fixing 6 instances of MISRA rules being broken

Fix vector initialization in NormalEstimationOMP

Relies on #3615 to do the toggling

Add a toggle option to grabber

Easy way to toggle streaming devices. Works with concurrent controllers (dual `isRunning`)

Remove dublicate /bigobj

Using prefix ++/-- operators for non-primitive types