feat(ApiLink): default member label to member name, cased per platform

[dobromirts]

Closes #109
Related to IgniteUI/igniteui-documentation#393

When <ApiLink> is used with a member but no explicit label, the auto-generated label is now just the member name instead of Type.member, cased per platform:

• WebComponents / React / Angular → camelCase (layout, singleBranchExpand)
• Blazor → PascalCase (Layout, SingleBranchExpand)

Previously <ApiLink type="DockManager" member="layout" /> rendered IgrDockManager.layout; it now renders layout. This removes the need to add a redundant label="layout" in the docs.

Scope:
Display-only change. URLs, member anchors, link resolution, type-only paths are unchanged. An explicit label still overrides the default.

[Copilot]

Pull request overview

Updates <ApiLink> so that when member is provided without an explicit label, the rendered link text defaults to the member name (instead of Type.member), formatted per platform conventions (camelCase for WebComponents/React/Angular, PascalCase for Blazor). This aligns the component’s display behavior with the docs authoring workflow described in issue #109.

Changes:

• Adjusted TypeDoc link label fallback logic to prefer the member name (platform-cased) when label is omitted.
• Added small member-casing helpers (upperFirst, lowerFirst, formatMemberName) to support platform-specific label formatting.
• Updated ApiLink README to document the new default label behavior and example output.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/components/mdx/ApiLink/ApiLink.astro	Changes default display label generation for member links and adds platform-specific member casing.
src/components/mdx/ApiLink/README.md	Documents the new member-based default label behavior and provides updated examples.

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