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, 172 insertions, 0 deletions

diff --git a/src/avp/components/sound.ui b/src/avp/components/sound.ui
new file mode 100644
index 0000000..4c11332
--- /dev/null
+++ b/src/avp/components/sound.ui
@@ -0,0 +1,172 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>Form</class>
+ <widget class="QWidget" name="Form">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>586</width>
+    <height>197</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Form</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout_2">
+   <item>
+    <layout class="QVBoxLayout" name="verticalLayout">
+     <property name="leftMargin">
+      <number>4</number>
+     </property>
+     <item>
+      <layout class="QHBoxLayout" name="horizontalLayout_8">
+       <item>
+        <widget class="QLabel" name="label_textColor">
+         <property name="sizePolicy">
+          <sizepolicy hsizetype="Fixed" vsizetype="Preferred">
+           <horstretch>0</horstretch>
+           <verstretch>0</verstretch>
+          </sizepolicy>
+         </property>
+         <property name="minimumSize">
+          <size>
+           <width>31</width>
+           <height>0</height>
+          </size>
+         </property>
+         <property name="text">
+          <string>Audio File</string>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QLineEdit" name="lineEdit_sound">
+         <property name="minimumSize">
+          <size>
+           <width>1</width>
+           <height>0</height>
+          </size>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QPushButton" name="pushButton_sound">
+         <property name="sizePolicy">
+          <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+           <horstretch>0</horstretch>
+           <verstretch>0</verstretch>
+          </sizepolicy>
+         </property>
+         <property name="minimumSize">
+          <size>
+           <width>1</width>
+           <height>0</height>
+          </size>
+         </property>
+         <property name="maximumSize">
+          <size>
+           <width>32</width>
+           <height>32</height>
+          </size>
+         </property>
+         <property name="text">
+          <string>...</string>
+         </property>
+         <property name="MaximumSize" stdset="0">
+          <size>
+           <width>32</width>
+           <height>32</height>
+          </size>
+         </property>
+        </widget>
+       </item>
+      </layout>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout_2">
+     <item>
+      <widget class="QLabel" name="label_2">
+       <property name="text">
+        <string>Volume</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QDoubleSpinBox" name="spinBox_volume">
+       <property name="suffix">
+        <string>x</string>
+       </property>
+       <property name="maximum">
+        <double>10.000000000000000</double>
+       </property>
+       <property name="singleStep">
+        <double>0.100000000000000</double>
+       </property>
+       <property name="value">
+        <double>1.000000000000000</double>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <spacer name="horizontalSpacer_2">
+       <property name="orientation">
+        <enum>Qt::Horizontal</enum>
+       </property>
+       <property name="sizeHint" stdset="0">
+        <size>
+         <width>40</width>
+         <height>20</height>
+        </size>
+       </property>
+      </spacer>
+     </item>
+     <item>
+      <widget class="QLabel" name="label">
+       <property name="text">
+        <string>Delay</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QDoubleSpinBox" name="spinBox_delay">
+       <property name="suffix">
+        <string>s</string>
+       </property>
+       <property name="maximum">
+        <double>9999999.990000000223517</double>
+       </property>
+       <property name="singleStep">
+        <double>0.500000000000000</double>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QCheckBox" name="checkBox_chorus">
+       <property name="text">
+        <string>Chorus</string>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <spacer name="verticalSpacer">
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>20</width>
+       <height>40</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>