Support remote inference on Triton Inference Server with ease of use (Project-MONAI#536)

* Adding requirements for Triton client impl

Signed-off-by: M Q <mingmelvinq@nvidia.com>

* Updated/added core classes to support Triton remote inference, and added a new example

Signed-off-by: M Q <mingmelvinq@nvidia.com>

* GitHub build server complains about conflicts for tritonclient[]>=2.54 for no specific reasons

Signed-off-by: M Q <mingmelvinq@nvidia.com>

* Fix flake8 complaints

Signed-off-by: M Q <mingmelvinq@nvidia.com>

* Fix pytype complaints by simplifying code

Signed-off-by: M Q <mingmelvinq@nvidia.com>

* Remove now unused imports

Signed-off-by: M Q <mingmelvinq@nvidia.com>

* Addressed all pytype and mypy complaint in new code in the dev env

Signed-off-by: M Q <mingmelvinq@nvidia.com>

* No complaint in local dev env, but on GitHub

Signed-off-by: M Q <mingmelvinq@nvidia.com>

* Add model confgi.pbtxt and example env settings

Signed-off-by: M Q <mingmelvinq@nvidia.com>

* Doc update

Signed-off-by: M Q <mingmelvinq@nvidia.com>

* update license dates

Signed-off-by: M Q <mingmelvinq@nvidia.com>

* Updated the copyright year of new files

Signed-off-by: M Q <mingmelvinq@nvidia.com>

---------

Signed-off-by: M Q <mingmelvinq@nvidia.com>
Signed-off-by: Simone Bendazzoli <simben@kth.se>

Author: MMelQin

docs/source/getting_started/examples.md

@@ -14,3 +14,4 @@
 - dicom_series_to_image_app
 - breast_density_classifer_app
 - cchmc_ped_abd_ct_seg_app
+- ai_remote_infer_app

requirements.txt

@@ -1,6 +1,5 @@
-holoscan~=3.0
-holoscan-cli~=3.0
+holoscan~=2.0
 numpy>=1.21.6
 colorama>=0.4.1
-tritonclient[all]>=2.53.0
+tritonclient[all]
 typeguard>=3.0.0