feat: replace urllib with requests library and refactor HTTP client implementation

Makefile

@@ -27,16 +27,16 @@ test:
 	pytest tests/ -v --tb=long --full-trace -l --maxfail=10
 
 test-cov:
-	pytest --cov=pr --cov-report=html --cov-report=term-missing
+	pytest --cov=rp --cov-report=html --cov-report=term-missing
 	@echo "Coverage report generated in htmlcov/index.html"
 
 lint:
-	flake8 pr tests --max-line-length=100 --ignore=E203,W503
-	mypy pr --ignore-missing-imports
+	flake8 rp tests --max-line-length=100 --ignore=E203,W503
+	mypy rp --ignore-missing-imports
 
 format:
-	black pr tests
-	isort pr tests --profile black
+	black rp tests
+	isort rp tests --profile black
 
 clean:
 	rm -rf build/