Stateful isAuthorization method

[MarcBridner]

Description of changes

Adds stateful_is_authorized, preparse_policy_set and preparse_schema that can be used to pre-load an immutable schema/policy set.

This way, we don't have to build a massive JSON struct on each authorization request.

In our tests where we perform approximately 50000 evaluations the execution time went from:

real    13m33.222s
user    132m49.959s
sys     1m43.130s

to

real    0m52.297s
user    7m55.203s
sys     1m8.939s

Or, in other words, a 15x performance increase.

Issue #, if available

#1829

Checklist for requesting a review

The change in this PR is (choose one, and delete the other options):

• A backwards-compatible change requiring a minor version bump to cedar-policy (e.g., addition of a new API).

I confirm that this PR (choose one, and delete the other options):

• Updates the "Unreleased" section of the CHANGELOG with a description of my change (required for major/minor version bumps).

I confirm that cedar-spec (choose one, and delete the other options):

• Does not require updates because my change does not impact the Cedar formal model or DRT infrastructure.

I confirm that docs.cedarpolicy.com (choose one, and delete the other options):

• Does not require updates because my change does not impact the Cedar language specification.

[chaluli]

Seems like a good thing if it's 15x speedup.

Please update the CHANGELOG to specify that this is a change in the FFI/wasm. Also, fix the formatting issues.

[chaluli]

Looks good once CI passes.

[john-h-kastner-aws]

This, AuthorizationCall and PartialAuthorizationCall are substantial similar. Wondering if there's any parsing logic we can share

[MarcBridner]

I went for the "rather have some duplication than break something existing" approach for this PR.
I'm not very familiar with the idiosyncrasies of Rust so I figured this'd be safer. I can give it a try if required.

[github-actions]

Coverage Report

Head Commit: b8182da4fdc633656aa8925da2d105d694f76c88

Base Commit: cbbb8459a16d9d3725facfa46b214c88fab4484c

Download the full coverage report.

Coverage of Added or Modified Lines of Rust Code

Required coverage: 80.00%

Actual coverage: 91.09%

Status: PASSED ✅

Details

File	Status	Covered	Coverage	Missed Lines
cedar-policy/src/ffi/is_authorized.rs	🟢	92/101	91.09%	744-746, 749-750, 795-796, 804, 819

Coverage of All Lines of Rust Code

Required coverage: 80.00%

Actual coverage: 84.04%

Status: PASSED ✅

Details

Package	Status	Covered	Coverage	Base Coverage
cedar-language-server	🟢	4619/5120	90.21%	90.21%
cedar-policy	🟡	3513/4943	71.07%	70.65%
cedar-policy-cli	🔴	675/1054	64.04%	64.04%
cedar-policy-core	🟢	21422/25181	85.07%	85.03%
cedar-policy-formatter	🟢	930/1112	83.63%	83.63%
cedar-policy-symcc	🟢	4715/5249	89.83%	89.83%
cedar-wasm	🔴	0/28	0.00%	0.00%

[john-h-kastner-aws]

Looks good. Merging!