refactor: change pull-type canisters into custom-type

[ericswanson-dfinity]

Description

This is a proof-of-concept, deleting both PullCanisterInfo and PullBuilder.

This is meant as a first step in moving toward an approach where canister properties aren't specific to a particular "type" of canister (though some properties may be mutually exclusive).

Note the dummy values when constructing CanisterTypeProperties::Custom.

Compare to https://github.com/dfinity/sdk/pull/3679

How Has This Been Tested?

refactor covered by e2e

Checklist:

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