Compute resolver complexity based on items

Closes gitlab-ce#58408

See merge request gitlab-org/gitlab-ee!11575

If a field is a resolver, its complexity is automatically
increased. By default we add extra points for sort and search
arguments (which will be common for various resolvers).

For specific resolvers we add field-specific complexity, e.g.
for Issues complexity is increased if we filter issues by `labelName`
(because then SQL query is more complex). We may want to tune these
values in future depending on real-life results.

Complexity is also dependent on the number of loaded nodes, but only
if we don't search by specific ID(s). Also added complexity is limited
(by default only twice more than child complexity) - the reason is
that although it's more complex to process more items, the complexity
increase is not linear (there is not so much difference between loading
10, 20 or 100 records from DB).

[CE] Compute resolver complexity based on items

See merge request gitlab-org/gitlab-ce!28017

If a field is a resolver, its complexity is automatically
increased. By default we add extra points for sort and search
arguments (which will be common for various resolvers).

For specific resolvers we add field-specific complexity, e.g.
for Issues complexity is increased if we filter issues by `labelName`
(because then SQL query is more complex). We may want to tune these
values in future depending on real-life results.

Complexity is also dependent on the number of loaded nodes, but only
if we don't search by specific ID(s). Also added complexity is limited
(by default only twice more than child complexity) - the reason is
that although it's more complex to process more items, the complexity
increase is not linear (there is not so much difference between loading
10, 20 or 100 records from DB).

Fix default value for start date in GitlabSubscription being static

Closes #11432

See merge request gitlab-org/gitlab-ee!12110

Fix editing issues and MRs with NULL lock_version

See merge request gitlab-org/gitlab-ce!28145

Refactor and improve Geo::LogCursor and tests

Closes #11092

See merge request gitlab-org/gitlab-ee!12276

Merge branch '11505-broken-master-lint-duplicatemethods-method-clusterablepresenter-clusters_path-is-defined-at-both-app-presenters-clusterable_presenter-rb' into 'master'

Resolve "Broken master: Lint/DuplicateMethods: Method ClusterablePresenter#clusters_path is defined at both app/presenters/clusterable_presenter.rb"

Closes #11505

See merge request gitlab-org/gitlab-ee!12339

Upgrade GitLab UI to 3.10.0

See merge request gitlab-org/gitlab-ce!28140

Fix issuables state_id nil when importing projects from GitHub

Closes #57906

See merge request gitlab-org/gitlab-ce!28027

Issues and merge requests imported from GitHub are having state_id
set to null. This fixes the GitHub project importer and schedule
migrations to fix state_id.

Add close_select2 method to select2_helper

See merge request gitlab-org/gitlab-ce!27981

Fetch all available groups in MR approval rule form

Closes #11194

See merge request gitlab-org/gitlab-ee!12096

Add Mayra Cabrera to .gitlab/codeowners

See merge request gitlab-org/gitlab-ce!28131

Per the second step of:
https://gitlab.com/gitlab-com/www-gitlab-com/issues/3351

Update dependency @gitlab/svgs to ^1.60.0

See merge request gitlab-org/gitlab-ce!27842

Support creating a child epic from API

See merge request gitlab-org/gitlab-ee!11064

Aligns the play button for stages

Closes #61469

See merge request gitlab-org/gitlab-ce!28124

EE Backport: Support Prometheus for group-level clusters (backend)

See merge request gitlab-org/gitlab-ee!12115

Tweak cluster helper and refactor its specs.

It also make it more efficient

Support Prometheus for group-level clusters (backend)

See merge request gitlab-org/gitlab-ce!27995

Tweak cluster helper and refactor its specs.

- move code checking if epics can be linked
  from EpicLinks::CreateService to Epic model

Improve scheduling of mirror updates to reduce frequency of database queries

See merge request gitlab-org/gitlab-ee!11217

Move code from EpicsHelper to a presenter

Closes #8948

See merge request gitlab-org/gitlab-ee!10849

**Note:**
- It resolves this by passing `all_available` to the groups request
- Also adds feature spec