Suggestion: Add 'iter_all' as iterator version of 'get_all'

Bắt đầu với triển khai fetch_all hiện có trong hubspot/utils/objects.py và xem xét các entry point get_all và do_search được mô tả trong issue. Công việc được xem là hoàn tất khi client cung cấp một iterator tích hợp, xử lý các dạng khác nhau của đối số phân trang và hoạt động với các object API và association API được liệt kê.

get_all reads all objects in memory before return. In most scenarios, an iterator can be a better fit.

My bypass solution:
This is based on fetch_all

PAGE_MAX_SIZE = 100
def iter_all(get_page_api_client, **kwargs):
    after = kwargs.pop('after', None)

    while True:
        page = get_page_api_client.get_page(after=after, limit=PAGE_MAX_SIZE, **kwargs)
        yield from page.results
        if page.paging is None:
            break
        after = page.paging.next.after

It can be used like this

from itertools import islice
list(islice(iter_all(hs_client.crm.companies.basic_api, properties=['custom_field_1']), 2))

It can also be monkeypatched into suitable objects

import hubspot

def patch_iter_all():
    def iter_all_for_crm(self, **kw):
        yield from iter_all(self.basic_api, **kw)
    hubspot.discovery.crm.tickets.discovery.Discovery.iter_all = iter_all_for_crm
    hubspot.discovery.crm.products.discovery.Discovery.iter_all = iter_all_for_crm
    hubspot.discovery.crm.quotes.discovery.Discovery.iter_all = iter_all_for_crm
    hubspot.discovery.crm.contacts.discovery.Discovery.iter_all = iter_all_for_crm
    hubspot.discovery.crm.deals.discovery.Discovery.iter_all = iter_all_for_crm
    hubspot.discovery.crm.line_items.discovery.Discovery.iter_all = iter_all_for_crm
    hubspot.discovery.crm.owners.discovery.Discovery.iter_all = iter_all_for_crm
    hubspot.discovery.crm.companies.discovery.Discovery.iter_all = iter_all_for_crm
patch_iter_all()

Then the above example can simpler

list(islice(hs_client.crm.companies.iter_all(properties=['custom_field_1']), 2))

It would be nice if hubspot official api can have a 'iter_all' for every object that has 'get_all' function simply forward to fetch_all.

Just found there is another kind of 'get_all()' that returns forward paging object, like hs_client.crm.companies.associations_api.get_all() (where hs_client is the client object).
To iterate all items, it would be nice to have a common tool like this

def iter_from(f, **kwargs):
    after = None
    while True:
        page = f(after=after, limit=100, **kwargs)
        yield from page.results
        if page.paging is None:
            break
        after = page.paging.next.after

Then it can be used as following

for item in iter_from(hs_client.crm.companies.associations_api.get_all, company_id='1234567', to_object_type='contact'):
    # item is hubspot.crm.companies.models.associated_id.AssociatedId object
    ....

Edit: for functions like hs_client.crm.contacts.search_api.do_search the after and limit params are included in *Request object like PublicObjectSearchRequest.
Functions like hs_client.crm.companies.associations_api.get_all() have after and limit in function argument.

It would be nice if hubspot client can have a built-in pagination iterator.