remove .codecov.yml and MANIFEST.in, move .coveragerc to pyproject.toml (#8500)

* remove .codecov.yml and MANIFEST.in, move .coveragerc to pyproject.toml

* remove scripts/pypi_upload.sh

scripts/build_package.sh

@@ -10,5 +10,6 @@ fi
 
 echo 'PKG = "pip"' >dvc/utils/build.py
 
-python -m pip install -U build setuptools>=61
+python -m pip install build twine
 python -m build
+twine check dist/*

scripts/pypi_upload.sh

@@ -1,14 +0,0 @@
-#!/bin/bash
-
-set -e
-
-if [ ! -d "dvc" ]; then
-  echo "Please run this script from repository root"
-  exit 1
-fi
-
-rm -rf dist/
-pip install twine
-python -m pip install -U build setuptools>=58.2
-python -m build --sdist --wheel --outdir dist/
-twine upload dist/*