MLIA-649 Strip mlia backend management into a new command

* add entry point for mlia-backend in setup.cfg and main.py
* add --force option for install from path: uninstall existing backend
  in ML Inference Advisor and install from given path
* add uninstall and list program parameters: uninstall has
  backend_name as input arg, install has backend_name as a mandatory argument
* add unit tests in test_cli_commands.py, test_cli_main.py,
  test_tools_metadata_common.py, test_tools_metadata_corstone.py
* updated README.md
* remove --download option for installing backend
* add new lines for the display section when we do mlia-backen list
* add case insensitive support for backend names in command line argument

Change-Id: Icb89d8957fa6be4b767710e24fa074f26472674b

1 files changed, 17 insertions, 20 deletions

diff --git a/src/mlia/cli/options.py b/src/mlia/cli/options.py
index f6dcf75..bf2f09b 100644
--- a/src/mlia/cli/options.py
+++ b/src/mlia/cli/options.py
@@ -131,7 +131,7 @@ def add_custom_supported_operators_options(parser: argparse.ArgumentParser) -> N
     )
 
 
-def add_backend_options(parser: argparse.ArgumentParser) -> None:
+def add_backend_install_options(parser: argparse.ArgumentParser) -> None:
     """Add options for the backends configuration."""
 
     def valid_directory(param: str) -> Path:
@@ -141,42 +141,39 @@ def add_backend_options(parser: argparse.ArgumentParser) -> None:
 
         return dir_path
 
-    subparsers = parser.add_subparsers(title="Backend actions", dest="backend_action")
-    subparsers.required = True
-
-    install_subparser = subparsers.add_parser(
-        "install", help="Install backend", allow_abbrev=False
-    )
-    install_type_group = install_subparser.add_mutually_exclusive_group()
-    install_type_group.required = True
-    install_type_group.add_argument(
+    parser.add_argument(
         "--path", type=valid_directory, help="Path to the installed backend"
     )
-    install_type_group.add_argument(
-        "--download",
+    parser.add_argument(
+        "--i-agree-to-the-contained-eula",
         default=False,
         action="store_true",
-        help="Download and install backend",
+        help=argparse.SUPPRESS,
     )
-    install_subparser.add_argument(
-        "--i-agree-to-the-contained-eula",
+    parser.add_argument(
+        "--force",
         default=False,
         action="store_true",
-        help=argparse.SUPPRESS,
+        help="Force reinstall backend in the specified path",
     )
-    install_subparser.add_argument(
+    parser.add_argument(
         "--noninteractive",
         default=False,
         action="store_true",
         help="Non interactive mode with automatic confirmation of every action",
     )
-    install_subparser.add_argument(
+    parser.add_argument(
         "name",
-        nargs="?",
         help="Name of the backend to install",
     )
 
-    subparsers.add_parser("status", help="Show backends status")
+
+def add_backend_uninstall_options(parser: argparse.ArgumentParser) -> None:
+    """Add options for the backends configuration."""
+    parser.add_argument(
+        "name",
+        help="Name of the installed backend",
+    )
 
 
 def add_evaluation_options(parser: argparse.ArgumentParser) -> None: