Use pyproject.toml + uv_build

This replaces setup.py by a modern pyproject.toml using uv_build
backend.

Dependencies are being also managed by uv, so to install dependencies
and run the project one can execute:

```
uv sync
uv run pytest # optional
python -m avp
```

To build the both source and binary (wheel) distribution package run:
```
uv build
```

Uv can be installed with `pip install uv`.

The directory structure has been changed to reflect best practices.
- src/* -> src/avp/
- src/tests -> ../tests

1 files changed, 39 insertions, 0 deletions

diff --git a/src/avp/__init__.py b/src/avp/__init__.py
new file mode 100644
index 0000000..ee9bebb
--- /dev/null
+++ b/src/avp/__init__.py
@@ -0,0 +1,39 @@
+import sys
+import os
+import logging
+
+
+__version__ = "2.1.0"
+
+
+class Logger(logging.getLoggerClass()):
+    """
+    Custom Logger class to handle custom VERBOSE log level.
+    Levels used in this program are as follows:
+        VERBOSE     Annoyingly frequent debug messages (e.g, in loops)
+        DEBUG       Ordinary debug information
+        INFO        Expected events that are expensive or irreversible
+        WARNING     A non-fatal error or suspicious behaviour
+        ERROR       Any error that would interrupt the user
+        CRITICAL    Things that really shouldn't happen at all
+    """
+
+    def __init__(self, name, level=logging.NOTSET):
+        super().__init__(name, level)
+        logging.addLevelName(5, "VERBOSE")
+
+    def verbose(self, msg, *args, **kwargs):
+        if self.isEnabledFor(5):
+            self._log(5, msg, args, **kwargs)
+
+
+logging.setLoggerClass(Logger)
+logging.VERBOSE = 5
+
+
+if getattr(sys, "frozen", False):
+    # frozen
+    wd = os.path.dirname(sys.executable)
+else:
+    # unfrozen
+    wd = os.path.dirname(os.path.realpath(__file__))