add simple cli entrypoints for api functionality

like:
```
$ ls bin/
block_attack			get_app_flavor			get_block_attack_descriptions	get_flows			get_sla				get_whitelist_rules
command				get_app_info			get_cluster_relations		get_next_best_plan_for_app	get_slas			validate_app_name
get_app_configurations		get_available_backups_for_app	get_eav_description		get_product_info		get_whitelist_options

hypernode-api-python]$ ./bin/get_sla --help
usage: get_sla [-h] sla_code

Get a specific SLA.

$ ./bin/get_sla sla-standard
{
  "id": 123,
  "code": "sla-standard",
  "name": "SLA Standard",
  "price": 1234,
  "billing_period": 1,
  "billing_period_unit": "month"
}

positional arguments:
  sla_code    The code of the SLA to get

optional arguments:
  -h, --help  show this help message and exit
```

Author: vdloo

.github/workflows/test.yaml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.7', '3.8', '3.9', '3.10']
+        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11']
 
     steps:
       - uses: actions/checkout@v3

README.md

@@ -18,6 +18,35 @@ pip install -r requirements/development.txt
 
 Each Hypernode has an API token associated with it, you can use that to talk to the API directly. You can find the token in `/etc/hypernode/hypernode_api_token`. For API tokens with special permissions please contact [email protected]. Not all functionality in the API is currently generally available but if you'd like to start automating and have an interesting use-case we'd love to hear from you.
 
+## Using the library from the commandline
+
+In the `bin/` directory you'll find entrypoints to interact with the API directly from the commandline.
+
+See for example:
+```bash
+$ export PYTHONPATH=.
+$ ./bin/get_slas --help
+usage: get_slas [-h]
+
+List all available SLAs.
+
+Example:
+$ ./bin/get_slas
+[
+  {
+    "id": 123,
+    "code": "sla-standard",
+    "name": "SLA Standard",
+    "price": 1234,
+    "billing_period": 1,
+    "billing_period_unit": "month"
+  },
+  ...
+]
+
+optional arguments:
+  -h, --help  show this help message and exit
+```
 
 ### Installing the library in your project
 

bin/block_attack

@@ -0,0 +1 @@
+command

bin/command

@@ -0,0 +1,14 @@
+#!/usr/bin/env python3
+import os
+import sys
+from hypernode_api_python import commands
+
+
+if __name__ == '__main__':
+    command = os.path.basename(__file__)
+
+    if hasattr(commands, command):
+        sys.exit(getattr(commands, command)() or 0)
+    else:
+        sys.stderr.write("Command '{}' not found in hypernode_api_python.commands\n".format(command))
+        sys.exit(1)

bin/get_app_configurations

@@ -0,0 +1 @@
+command

bin/get_app_flavor

@@ -0,0 +1 @@
+command

bin/get_app_info

@@ -0,0 +1 @@
+command

bin/get_available_backups_for_app

@@ -0,0 +1 @@
+command

bin/get_block_attack_descriptions

@@ -0,0 +1 @@
+command

bin/get_cluster_relations

@@ -0,0 +1 @@
+command