Do project setup from scratch

Following guidelines from the Python Packaging User Guide [1].

This commit intentionally breaks the .gitignore, project dependencies, GitHub
Actions and other stuff. It also removes almost the entire README. The intention
behind this is to get rid of all cruft that as accumulated over time and to have
a fresh start. Only necessary things will be re-added as they're needed.

From now on, I also plan on adding documentation for every feature at the same
time that the feature is implemented. This is to ensure that the documentation
does not become outdated.

[1]: https://packaging.python.org/

.github/workflows/package.yml

@@ -1,74 +0,0 @@
-name: Package Application with Pyinstaller
-
-on:
-  push:
-    branches:
-      - "*"
-    tags:
-      - "v*"
-
-jobs:
-  build:
-
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [ubuntu-latest, windows-latest, macos-latest]
-
-    steps:
-    - uses: actions/checkout@v2
-
-    - uses: actions/setup-python@v2
-      with:
-        python-version: '3.x'
-
-    - name: "Install dependencies"
-      run: "pip install setuptools keyring pyinstaller rich requests beautifulsoup4 -f --upgrade"
-
-    - name: "Install sync_url.py"
-      run: "pyinstaller sync_url.py -F"
-
-    - name: "Move artifact"
-      run: "mv dist/sync_url* dist/sync_url-${{ matrix.os }}"
-
-    - uses: actions/upload-artifact@v2
-      with:
-        name: "Pferd Sync URL"
-        path: "dist/sync_url*"
-
-  release:
-    name: Release
-
-    needs: [build]
-    runs-on: ubuntu-latest
-    if: startsWith(github.ref, 'refs/tags/')
-
-    env:
-      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-
-    steps:
-    - name: "Checkout"
-      uses: actions/checkout@v2
-
-    - name: "Download artifacts"
-      uses: actions/download-artifact@v2
-      with:
-        name: "Pferd Sync URL"
-
-    - name: "look at folder structure"
-      run: "ls -lah"
-
-    - name: "Rename releases"
-      run: "mv sync_url-macos-latest pferd_sync_url_mac && mv sync_url-ubuntu-latest pferd_sync_url_linux && mv sync_url-windows-latest pferd_sync_url.exe"
-
-    - name: "Create release"
-      uses: softprops/action-gh-release@v1
-
-    - name: "Upload release artifacts"
-      uses: softprops/action-gh-release@v1
-      with:
-        body: "Download the correct sync_url for your platform and run it in the terminal or CMD. You might need to make it executable on Linux/Mac with `chmod +x <file>`. Also please enclose the *url you pass to the program in double quotes* or your shell might silently screw it up!"
-        files: |
-          pferd_sync_url_mac
-          pferd_sync_url_linux
-          pferd_sync_url.exe