feat: add pagination to ListAllOrganizations API

[AmanGIT07]

Overview:

A new package named pagination is introduced. It has methods like Offset and SetTotalPages which will be useful in API that needs pagination.
ListAllOrganizations uses this and returns x amount of records by default. The page number and items per page can be modulated by params: page_num & page_size respectively. The API response includes count denoting the total number of records.

Testing:

1. Default behaviour

Request:

`curl --location 'http://localhost:8400/frontier-api/v1beta1/admin/organizations' \
--header 'Cookie: sid=`

Response:

`{
    "organizations": [
        {
            "id": "",
            "name": "",
            "title": "",
            "metadata": {},
            "created_at": "",
            "updated_at": "",
            "state": "",
            "avatar": ""
        },
        {
            "id": "",
            "name": "",
            "title": "",
            "metadata": {},
            "created_at": "",
            "updated_at": "",
            "state": "",
            "avatar": ""
        }
    ],
    "count": 2
}`

2. Request a specific page with page size

Request:

curl --location 'http://localhost:8400/frontier-api/v1beta1/admin/organizations?page_num=1&page_size=10' \
--header 'Cookie: sid='

Response:

{
    "organizations": [
        {
            "id": "",
            "name": "",
            "title": "",
            "metadata": {},
            "created_at": "",
            "updated_at": "",
            "state": "",
            "avatar": ""
        }
    ],
    "count": 2
}

3. Use pagination with existing filter

Request:

curl --location 'http://localhost:8400/frontier-api/v1beta1/admin/organizations?state=disabled&page_num=1&page_size=1' \
--header 'Cookie: sid='

Response:

{
    "organizations": [
        {
            "id": "",
            "name": "",
            "title": "",
            "metadata": {},
            "created_at": "",
            "updated_at": "",
            "state": "disabled",
            "avatar": ""
        }
    ],
    "count": 1
}

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
frontier	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Aug 21, 2024 4:09pm

[coveralls]

Pull Request Test Coverage Report for Build 10493450561

Details

• 49 of 82 (59.76%) changed or added relevant lines in 5 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.04%) to 9.383%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
internal/store/postgres/organization_repository.go	13	17	76.47%
proto/v1beta1/admin.pb.go	8	15	53.33%
proto/v1beta1/admin.pb.validate.go	0	22	0.0%

Totals
Change from base Build 10486587305:	0.04%
Covered Lines:	10195
Relevant Lines:	108657

---

💛 - Coveralls