PyInstaller Spec to Wrap Khoj into a Basic Native App

- Verified functionality on MacOS

- Add ICNS Icon to use as MacOS App Icon
- Spec generated by PyInstaller:
  ```sh
  pyinstaller \
       src/main.py \
       --windowed \
       --onefile \
       --name "Khoj" \
       --target-arch arm64 \
       -i src/interface/web/assets/icons/favicon.icns \
       --add-data "src/interface/web:src/interface/web" \
       --copy-metadata tqdm \
       --copy-metadata regex \
       --copy-metadata requests \
       --copy-metadata packaging \
       --copy-metadata filelock \
       --copy-metadata numpy \
       --copy-metadata tokenizers
  ```

Khoj.spec

@@ -0,0 +1,61 @@
+# -*- mode: python ; coding: utf-8 -*-
+from PyInstaller.utils.hooks import copy_metadata
+
+datas = [('src/interface/web', 'src/interface/web')]
+datas += copy_metadata('tqdm')
+datas += copy_metadata('regex')
+datas += copy_metadata('requests')
+datas += copy_metadata('packaging')
+datas += copy_metadata('filelock')
+datas += copy_metadata('numpy')
+datas += copy_metadata('tokenizers')
+
+
+block_cipher = None
+
+
+a = Analysis(
+    ['src/main.py'],
+    pathex=[],
+    binaries=[],
+    datas=datas,
+    hiddenimports=['huggingface_hub.repository'],
+    hookspath=[],
+    hooksconfig={},
+    runtime_hooks=[],
+    excludes=[],
+    win_no_prefer_redirects=False,
+    win_private_assemblies=False,
+    cipher=block_cipher,
+    noarchive=False,
+)
+pyz = PYZ(a.pure, a.zipped_data, cipher=block_cipher)
+
+exe = EXE(
+    pyz,
+    a.scripts,
+    a.binaries,
+    a.zipfiles,
+    a.datas,
+    [],
+    name='Khoj',
+    debug=False,
+    bootloader_ignore_signals=False,
+    strip=False,
+    upx=True,
+    upx_exclude=[],
+    runtime_tmpdir=None,
+    console=False,
+    disable_windowed_traceback=False,
+    argv_emulation=False,
+    target_arch='arm64',
+    codesign_identity=None,
+    entitlements_file=None,
+    icon='src/interface/web/assets/icons/favicon.icns',
+)
+app = BUNDLE(
+    exe,
+    name='Khoj.app',
+    icon='src/interface/web/assets/icons/favicon.icns',
+    bundle_identifier=None,
+)