Add SoupHttpResponse class for type hinting #104

Job	Run time
test-postgres-elasticsearch7 (3.8, Django>=4.1,<4.2, false)	4m 8s
test-postgres-elasticsearch6 (3.8, Django>=3.2,<3.3)	4m 39s
test-mysql (3.8, Django>=3.2,<3.3, false)	3m 23s
test-mysql (3.10, Django>=4.2,<4.3, false)	3m 41s
test-postgres (3.8, Django>=3.2,<3.3, false)	2m 48s
test-postgres (3.11, Django>=4.2,<4.3, postgres:12, notz, false)	3m 10s
test-postgres (3.10, Django>=4.1,<4.2, false, emailuser)	3m 8s
test-postgres (3.10, git+https://github.com/django/django.git@stable/4.2.x#egg=Django, true, post...	3m 5s
test-postgres (3.10, git+https://github.com/django/django.git@main#egg=Django, true, postgres:12,...	3m 6s
test-sqlite (3.9, Django>=4.1,<4.2)	2m 4s
test-sqlite-elasticsearch5 (3.8, Django>=3.2,<3.3)	2m 24s
test-sqlite-elasticsearch8 (3.10, Django>=4.2,<4.3, emailuser)	7m 50s
coverage	0s
	43m 26s

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