feat(shared): add Claude hooks command executor and utilities

- Add snake-case.ts: objectToSnakeCase, objectToCamelCase utilities
- Add tool-name.ts: transformToolName with PascalCase conversion
- Add pattern-matcher.ts: findMatchingHooks for hook config matching
- Add hook-disabled.ts: isHookDisabled for hook config validation
- Add temporary stub types at src/hooks/claude-code-hooks/types.ts
- Export all new utilities from src/shared/index.ts

Stub types will be replaced with full implementation in Task 1.
Import paths adjusted from opencode-cc-plugin structure to oh-my-opencode.

🤖 GENERATED WITH ASSISTANCE OF [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)

src/hooks/claude-code-hooks/types.ts

@@ -0,0 +1,25 @@
+// Temporary stub types for Task 0 - will be fully implemented in Task 1
+// These are minimal definitions to allow shared utilities to type-check
+
+export interface HookCommand {
+  type: string
+  command: string
+}
+
+export interface HookMatcher {
+  matcher: string
+  hooks: HookCommand[]
+}
+
+export interface ClaudeHooksConfig {
+  PreToolUse?: HookMatcher[]
+  PostToolUse?: HookMatcher[]
+  UserPromptSubmit?: HookMatcher[]
+  Stop?: HookMatcher[]
+}
+
+export type ClaudeHookEvent = "PreToolUse" | "PostToolUse" | "UserPromptSubmit" | "Stop"
+
+export interface PluginConfig {
+  disabledHooks?: boolean | ClaudeHookEvent[]
+}