Improve TypeScript type definitions

[puckey]

Improve TypeScript type definitions across all three packages, developed step by step together with Claude.

Admin

• Add JSDoc documentation to API config, schema, and component types
• Add missing types: SchemaFields, SchemaRoute, SchemaEvents, SchemaOpen, SchemaTextMixin, SchemaAffixMixin, SchemaDataMixin, WatchHandlers, PanelSchema, ClipboardConfig, DitoComponentInstance
• Add missing properties to existing types (e.g. class, info, maxLength, prefix/suffix, search, editable on options)
• Fix incorrect types (e.g. SchemaOptions array, parse accessor, resizable as accessor)
• Replace SchemaSetupMixin/SchemaRouteMixin with SchemaFields/SchemaRoute (keeping deprecated aliases)
• Add CollectionController base class, RelationController
• Type view and form schemas (ViewSchema, Form, Tabs)
• Add DitoContext properties and utility types (Buttons, Resource, Components)

Server

• Add JSDoc documentation to Model, Controller, Application, and action types
• Add missing methods and properties to Application (router, assets, validators, storage, services)
• Add missing methods to Model (lifecycle hooks, $transaction, $emit, $filterGraph, $populateGraph, $formatDatabaseJson, $parseDatabaseJson)
• Add CollectionController base class with query building and member resolution
• Add CompiledParametersValidator type
• Add modify/filter to ModelRelation
• Fix ModelScope signature, count return type (Promise<number>), ModelControllerHooks key types
• Add Authorize documentation and UsersController.isAuthenticated

Utils

• Convert type guards to proper type predicates (isPlainObject, isObject, isInteger, isAsync, etc.)
• Add missing exports (isArray, isPlainArray, isModule, defaultFormats)
• Add JSDoc documentation to mergeDeeply, assignDeeply, mapConcurrently, mapSequentially, data path functions, toPromiseCallback
• Broaden format/formatDate value types, fix parseDataPath return type
• Remove unused internal utility types

[lehni]

@puckey thanks for these! It looks like there's a merge conflicts though? Could you take a look? Otherwise good to go?