modularize src

+ merge main.py and manage.py
+ move start logic to swingmusic/__main__.py
+ add a run.py on the project root

uv.lock

@@ -926,7 +926,7 @@ wheels = [
 
 [[package]]
 name = "swingmusic"
-version = "2.0.2"
+version = "2.0.6"
 source = { virtual = "." }
 dependencies = [
     { name = "bjoern" },
@@ -953,7 +953,6 @@ dependencies = [
     { name = "tinytag" },
     { name = "tqdm" },
     { name = "unidecode" },
-    { name = "waitress" },
     { name = "watchdog" },
     { name = "xxhash" },
 ]
@@ -989,7 +988,6 @@ requires-dist = [
     { name = "tinytag", specifier = ">=2.0.0" },
     { name = "tqdm", specifier = ">=4.65.0" },
     { name = "unidecode", specifier = ">=1.3.6" },
-    { name = "waitress", specifier = ">=3.0.2" },
     { name = "watchdog", specifier = ">=4.0.0" },
     { name = "xxhash", specifier = ">=3.4.1" },
 ]
@@ -1085,15 +1083,6 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/c8/19/4ec628951a74043532ca2cf5d97b7b14863931476d117c471e8e2b1eb39f/urllib3-2.3.0-py3-none-any.whl", hash = "sha256:1cee9ad369867bfdbbb48b7dd50374c0967a0bb7710050facf0dd6911440e3df", size = 128369 },
 ]
 
-[[package]]
-name = "waitress"
-version = "3.0.2"
-source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/bf/cb/04ddb054f45faa306a230769e868c28b8065ea196891f09004ebace5b184/waitress-3.0.2.tar.gz", hash = "sha256:682aaaf2af0c44ada4abfb70ded36393f0e307f4ab9456a215ce0020baefc31f", size = 179901 }
-wheels = [
-    { url = "https://files.pythonhosted.org/packages/8d/57/a27182528c90ef38d82b636a11f606b0cbb0e17588ed205435f8affe3368/waitress-3.0.2-py3-none-any.whl", hash = "sha256:c56d67fd6e87c2ee598b76abdd4e96cfad1f24cacdea5078d382b1f9d7b5ed2e", size = 56232 },
-]
-
 [[package]]
 name = "watchdog"
 version = "6.0.0"