feat(soroban): add event emissions, auth cost, resource budget & priority engine (#779-782)

[NteinPrecious]

Summary

Implements four Soroban static analysis features requested in the Stellar Wave milestone.

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Issue #779 — Detect Redundant Soroban Event Emissions

• File: packages/rules/soroban/src/events/redundant-event-emissions.ts
• Parses function bodies and groups env.events().publish() calls by topic + payload.
• Reports duplicate emissions with line numbers and a consolidation suggestion.
• Rust rule: RedundantEventEmissionsRule in rule_engine.rs.

Issue #780 — Soroban Authorization Cost Analyzer

• File: packages/rules/soroban/src/authorization/authorization-analyzer.ts
• Three checks: repeated auth calls (A1), auth inside a loop (A2), redundant dual-auth (A3).
• Rust rule: AuthorizationCostRule — flags >2 auth calls per function and auth-in-loop.

Issue #781 — Soroban Resource Budget Estimator

• File: packages/rules/soroban/src/budget/resource-budget-estimator.ts
• Accepts a list of AnalysisFinding objects and produces a ResourceBudgetReport with per-category scores (CPU, memory, ledger, fees) on a 0–100 scale.
• Rust rule: ResourceBudgetEstimatorRule — counts storage/loop/event/auth ops per function.

Issue #782 — Soroban Optimization Priority Engine

• File: packages/rules/soroban/src/prioritization/optimization-priority-engine.ts
• Scores findings using configurable weights: severity (45%), resource impact (35%), fix complexity inverse (20%).
• rank() and topN() APIs for sorted output.
• Rust rule: OptimizationPriorityRule — surfaces the highest-density function per impl block.

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Files Changed

File	Change
packages/rules/soroban/src/events/redundant-event-emissions.ts	new
packages/rules/soroban/src/authorization/authorization-analyzer.ts	new
packages/rules/soroban/src/budget/resource-budget-estimator.ts	new
packages/rules/soroban/src/prioritization/optimization-priority-engine.ts	new
packages/rules/soroban/src/index.ts	updated — exports all four modules
packages/rules/src/soroban/rule_engine.rs	updated — four new Rust rules registered

Closes #779
Closes #780
Closes #781
Closes #782

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