feat: Implement project release API endpoints

[chiragchadha1]

Description and Context

Related to DPGDXFE-1041

Adds API functions and types for the new project release endpoints on DFSBuildPipeline's ProjectResource. These are needed by the CLI's hs project release command family (DPGDXFE-1041, DPGDXFE-1042, DPGDXFE-1043).

Three new API functions:

• createRelease(accountId, projectName, buildId) — POST /projects/{name}/releases
• listReleases(accountId, projectName, params?) — GET /projects/{name}/releases
• getReleaseInfo(accountId, projectName, releaseTag) — GET /projects/{name}/releases/{tag}

Two new types in types/Project.ts:

• Release — release object with tag, buildId, createdAt, and optional components
• FetchListReleasesResponse — standard CollectionResponse with paging cursor

The release API is still being actively developed by the backend team and may change. This gets the foundation in place so the CLI can start building against it.

Screenshots

TODO

• API shape may change as the backend iterates — types and functions will need updating

Who to Notify

@brandenrodgers @camden11 @joe-yeager

[camden11]

I think it's possible the SUBBUILD_TYPES const is outdated - see joe's comment here:
https://github.com/HubSpotEngineering/hubspot-cli-private/pull/588#discussion_r3033942007

Probably doesn't matter a ton, but if it's not urgent to merge this, we might want to figure out accurate typing before we move forward with this. I made an issue to audit our project types
https://linear.app/hubspot/issue/DPGDXFE-1218/audit-project-types-in-ppl-ldl-and-the-cli

[chiragchadha1]

Yeah this can definitely wait. I'll mark that issue as blocking this PR / issue