Removed usage of PyYAML for config parsing. (#13883)

* Ignore entire __pycache__ folder instead of individual *.pyc files

* Ignore .mypy_cache in git

* Rework config YAML parsing to use only ruamel.yaml

PyYAML silently overrides keys when encountering duplicates, but ruamel
raises and exception by default. Since we're already using it elsewhere,
dropping PyYAML is an easy choice to make.

* Added EnvString in config to slim down runtime_config()

* Added gitlens to devcontainer

* Automatically call FrigateConfig.runtime_config()

runtime_config needed to be called manually before. Now, it's been
removed, but the same code is run by a pydantic validator.

* Fix handling of missing -segment_time

* Removed type annotation on FrigateConfig's parse

I'd like to keep them, but then mypy complains about some fundamental
errors with how the pydantic model is structured. I'd like to fix it,
but I'd rather work towards moving some of this config to the database.

frigate/test/test_ffmpeg_presets.py

@@ -36,16 +36,13 @@ class TestFfmpegPresets(unittest.TestCase):
         }
 
     def test_default_ffmpeg(self):
-        frigate_config = FrigateConfig(**self.default_ffmpeg)
-        frigate_config.cameras["back"].create_ffmpeg_cmds()
-        assert self.default_ffmpeg == frigate_config.dict(exclude_unset=True)
+        FrigateConfig(**self.default_ffmpeg)
 
     def test_ffmpeg_hwaccel_preset(self):
         self.default_ffmpeg["cameras"]["back"]["ffmpeg"]["hwaccel_args"] = (
             "preset-rpi-64-h264"
         )
         frigate_config = FrigateConfig(**self.default_ffmpeg)
-        frigate_config.cameras["back"].create_ffmpeg_cmds()
         assert "preset-rpi-64-h264" not in (
             " ".join(frigate_config.cameras["back"].ffmpeg_cmds[0]["cmd"])
         )
@@ -58,7 +55,6 @@ class TestFfmpegPresets(unittest.TestCase):
             "-other-hwaccel args"
         )
         frigate_config = FrigateConfig(**self.default_ffmpeg)
-        frigate_config.cameras["back"].create_ffmpeg_cmds()
         assert "-other-hwaccel args" in (
             " ".join(frigate_config.cameras["back"].ffmpeg_cmds[0]["cmd"])
         )
@@ -73,7 +69,6 @@ class TestFfmpegPresets(unittest.TestCase):
             "fps": 10,
         }
         frigate_config = FrigateConfig(**self.default_ffmpeg)
-        frigate_config.cameras["back"].create_ffmpeg_cmds()
         assert "preset-nvidia-h264" not in (
             " ".join(frigate_config.cameras["back"].ffmpeg_cmds[0]["cmd"])
         )
@@ -89,8 +84,6 @@ class TestFfmpegPresets(unittest.TestCase):
             "preset-rtsp-generic"
         )
         frigate_preset_config = FrigateConfig(**self.default_ffmpeg)
-        frigate_config.cameras["back"].create_ffmpeg_cmds()
-        frigate_preset_config.cameras["back"].create_ffmpeg_cmds()
         assert (
             # Ignore global and user_agent args in comparison
             frigate_preset_config.cameras["back"].ffmpeg_cmds[0]["cmd"]
@@ -102,7 +95,6 @@ class TestFfmpegPresets(unittest.TestCase):
             "preset-rtmp-generic"
         )
         frigate_config = FrigateConfig(**self.default_ffmpeg)
-        frigate_config.cameras["back"].create_ffmpeg_cmds()
         assert "preset-rtmp-generic" not in (
             " ".join(frigate_config.cameras["back"].ffmpeg_cmds[0]["cmd"])
         )
@@ -117,7 +109,6 @@ class TestFfmpegPresets(unittest.TestCase):
         argsList = defaultArgsList + ["-some", "arg with space"]
         self.default_ffmpeg["cameras"]["back"]["ffmpeg"]["input_args"] = argsString
         frigate_config = FrigateConfig(**self.default_ffmpeg)
-        frigate_config.cameras["back"].create_ffmpeg_cmds()
         assert set(argsList).issubset(
             frigate_config.cameras["back"].ffmpeg_cmds[0]["cmd"]
         )
@@ -125,7 +116,6 @@ class TestFfmpegPresets(unittest.TestCase):
     def test_ffmpeg_input_not_preset(self):
         self.default_ffmpeg["cameras"]["back"]["ffmpeg"]["input_args"] = "-some inputs"
         frigate_config = FrigateConfig(**self.default_ffmpeg)
-        frigate_config.cameras["back"].create_ffmpeg_cmds()
         assert "-some inputs" in (
             " ".join(frigate_config.cameras["back"].ffmpeg_cmds[0]["cmd"])
         )
@@ -135,7 +125,6 @@ class TestFfmpegPresets(unittest.TestCase):
             "preset-record-generic-audio-aac"
         )
         frigate_config = FrigateConfig(**self.default_ffmpeg)
-        frigate_config.cameras["back"].create_ffmpeg_cmds()
         assert "preset-record-generic-audio-aac" not in (
             " ".join(frigate_config.cameras["back"].ffmpeg_cmds[0]["cmd"])
         )
@@ -145,10 +134,9 @@ class TestFfmpegPresets(unittest.TestCase):
 
     def test_ffmpeg_output_record_not_preset(self):
         self.default_ffmpeg["cameras"]["back"]["ffmpeg"]["output_args"]["record"] = (
-            "-some output"
+            "-some output -segment_time 10"
         )
         frigate_config = FrigateConfig(**self.default_ffmpeg)
-        frigate_config.cameras["back"].create_ffmpeg_cmds()
         assert "-some output" in (
             " ".join(frigate_config.cameras["back"].ffmpeg_cmds[0]["cmd"])
         )