Move to src, add bulding to pypi

.github/workflows/python-publish.yml

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+# This workflow will upload a Python Package using Twine when a release is created
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-python#publishing-to-package-registries
+
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+
+name: Upload Python Package
+
+on:
+  release:
+    types: [published]
+
+permissions:
+  contents: read
+
+jobs:
+  deploy:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Python
+      uses: actions/setup-python@v3
+      with:
+        python-version: '3.x'
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install build
+    - name: Mark version
+      run: python3 tags_marker.py
+    - name: Build package
+      run: python -m build
+    - name: Publish package
+      uses: pypa/gh-action-pypi-publish@27b31702a0e7fc50959f5ad993c78deac1bdfc29
+      with:
+        user: __token__
+        password: ${{ secrets.PYPI_API_TOKEN }}

pyproject.toml

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+[build-system]
+requires = ["setuptools>=61.0"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "clipman"
+version = "!!{PLACEHOLDER}!!"
+authors = [
+  {name="NikitaBeloglazov", email="nnikita.beloglazov@gmail.com"},
+]
+description = "Python3 module for working with clipboard. Currently read-only interaction. Created because pyperclip is discontinued."
+readme = "README.md"
+license = {text = "MPL 2.0 License"}
+
+requires-python = ">=3.9"
+dependencies = []
+
+keywords = ["clipman", "clipboard", "copy", "paste", "xclip"]
+
+classifiers = [
+    "Programming Language :: Python :: 3",
+    "License :: OSI Approved :: Mozilla Public License 2.0 (MPL 2.0)",
+    "Development Status :: 4 - Beta",
+    "Intended Audience :: Developers",
+    "Topic :: Software Development :: Libraries :: Python Modules"
+]
+
+[project.urls]
+"Homepage" = "https://github.com/NikitaBeloglazov/clipman"
+"Bug Tracker" = "https://github.com/NikitaBeloglazov/clipman/issues"

src/clipman/__version__.py

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+"""
+Created for storing version number.
+The version number will be placed here based on the tag in Github using the tags_marker.py script.
+
+Having "!!{PLACEHOLDER}!!" in final releases is NOT allowed.
+"""
+__version__="!!{PLACEHOLDER}!!"