feat: ICE

[enthusiastmartin]

This PR introduces foundation of ICE - Intent Composing Engine.

Included:

• intent submissions
• solution execution
• solver v1 - initial solving mechanism with matching algorithm ( will be expanded and improved )

[github-actions]

Weight Diff Report

0 extrinsic(s) changed across 0 pallet(s). New: 6. Removed: 0.

New extrinsics (6)

Pallet	Extrinsic	RefTime	Proof	Reads	Writes
pallet_ice	submit_solution	387.4M	8799	22	11
pallet_ice	set_protocol_fee	10.0M	0	1	1
pallet_intent	submit_intent	71.0M	6190	6	5
pallet_intent	remove_intent	63.9M	4714	4	4
pallet_intent	cleanup_intent	63.0M	4714	5	4
pallet_lazy_executor	dispatch_top_base_weight	82.4M	4043	3	2

---

Threshold: ±10%. Base Weight::from_parts(ref_time, proof_size) compared; per-unit components ignored.

[claude]

Claude Code Review

Claude Code Review is paused for this repository. To reconnect it, an admin of this repository's GitHub organization (or the account owner, for personal repositories) who can also manage your Claude organization's Code Review settings needs to re-link GitHub in Code Review settings. This is a one-time step.

_{Tip: disable this comment in your organization's Code Review settings.}

[claude]

Claude Code Review

Claude Code Review is paused for this repository. To reconnect it, an admin of this repository's GitHub organization (or the account owner, for personal repositories) who can also manage your Claude organization's Code Review settings needs to re-link GitHub in Code Review settings. This is a one-time step.

_{Tip: disable this comment in your organization's Code Review settings.}