fix: ECS args

[manmartgarc]

Description

Introducing the --tc-kwargs functionality from #34 had a bug when no settings were passed. This mean that even though the CLI was working locally, when it came to sending the CLI args to the ECS container was wrong. This PR fixes that issue and extends unit tests to check for this case.

Type of change

• [x] Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Extended unit tests within tests/test_ecs.py

Checklist

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] I have made sure to bump the version within pyproject.toml respectively
• [x] My changes generate no new warnings
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes

[github-actions[bot]]

Coverage Report

File	Stmts	Miss	Cover	Missing
/opt/hostedtoolcache/Python/3.11.2/x64/lib/python3.11/site-packages/cloudtile
__init__.py	0	0	100%
__main__.py	6	0	100%
converter.py	57	0	100%
ecs.py	78	0	100%
geofile.py	125	0	100%
s3.py	97	0	100%
tippecanoe.py	68	0	100%
/opt/hostedtoolcache/Python/3.11.2/x64/lib/python3.11/site-packages/cloudtile/cli
__init__.py	56	0	100%
parsers.py	72	0	100%
TOTAL	559	0	100%

Tests	Skipped	Failures	Errors	Time
135	0 :zzz:	0 :x:	0 :fire:	7.158s :stopwatch: