feat: Add `reserved_cycles` and `reserved_cycles_limit`

[ulan]

This adds the new fields to the API of the management canister:

• reserved_cycles to CanisterStatusResponse.
• reserved_cycles_limit to CanisterSettings and DefiniteCanisterSettings.

More information:

• https://forum.dfinity.org/t/23447
• https://dashboard.internetcomputer.org/proposal/126094

Description

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context.

Fixes # (issue)

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration.

Checklist:

• [x] The title of this PR complies with Conventional Commits.
• [x] I have edited the CHANGELOG accordingly.
• [] I have made corresponding changes to the documentation.

[ulan]

I am also working on the spec changes

[ulan]

The spec changes are merged: https://github.com/dfinity/interface-spec/pull/257