infra: add integration_tests and coverage to MAKEFILE (langchain-ai#17053)

- **Description: update community MAKE file** 
    - adds `integration_tests`
    - adds `coverage`

- **Issue:** the issue # it fixes if applicable,
    - moving out of langchain-ai#17014
- **Dependencies:** n/a
- **Twitter handle:** @scottnath
- **Mastodon handle:** scottnath@mastodon.social

---------

Co-authored-by: Bagatur <baskaryan@gmail.com>

Author: scottnath

libs/community/Makefile

@@ -5,11 +5,17 @@ all: help
 
 # Define a variable for the test file path.
 TEST_FILE ?= tests/unit_tests/
+integration_tests: TEST_FILE = tests/integration_tests/
 
-test:
-	poetry run pytest $(TEST_FILE)
+# Run unit tests and generate a coverage report.
+coverage:
+	poetry run pytest --cov \
+		--cov-config=.coveragerc \
+		--cov-report xml \
+		--cov-report term-missing:skip-covered \
+		$(TEST_FILE)
 
-tests:
+test tests integration_tests:
 	poetry run pytest $(TEST_FILE)
 
 test_watch: