feat: types, storage, and runtime RPCs for entity Names (Intent, IntentGroup)

[JoeCap08055]

Description

This PR implments type, storage, and runtime RPCs for mapping fully qualified names of the form <protocol>.<descriptor> to Intents or IntentGroups.

Additional tests & support will be the subject of an upcoming PR; this is only merging to a feature branch.

Closes #2562

Discussion

Checklist

• Updated Pallet Readme?
• Updated js/api-augment for Custom RPC APIs?
• Design doc(s) updated?
• Unit Tests added?
• e2e Tests added?
• Benchmarks added?
• Spec version incremented?

[codecov]

Codecov Report

❌ Patch coverage is 63.15789% with 14 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
common/primitives/src/schema.rs	0.00%	9 Missing ⚠️
pallets/schemas/src/types.rs	0.00%	3 Missing ⚠️
pallets/schemas/src/lib.rs	92.30%	2 Missing ⚠️

Files with missing lines	Coverage Δ
pallets/schemas/src/lib.rs	83.57% <92.30%> (ø)
pallets/schemas/src/types.rs	90.00% <0.00%> (ø)
common/primitives/src/schema.rs	43.75% <0.00%> (ø)

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[saraswatpuneet]

Lgtm some nits

[shannonwells]

I reviewed the code. I have no blocking questions/concerns of my own, looks good assuming Aramik's question is answered!