feat: added basic members page and MUI styling

[pgovindu08]

Description

Added a members list with placeholder data that shows each member's bio, LinkedIn, and GitHub contributions in a detail panel. The page also has a search bar to filter members by name, major, role, or graduation year. Note: the members list currently uses mock data as a placeholder until a real data source is connected.

Relevant Issues

How to Test

Miscellaneous Notes

• The "Filters" button is rendered in a disabled state until filter behavior is implemented.
• Replaced maxWidth: 'lg' in sx with MUI's Container component (maxWidth="lg") for correct theme-aware breakpoint handling.
• Fixed "Github" label capitalization to "GitHub" in the member detail panel.

[Copilot]

Pull request overview

Adds a client-side /members page implemented with Material UI components, including a searchable members table and a detail panel showing bios and external links.

Changes:

• Implemented MembersPage with search filtering, selection, and a two-pane layout.
• Added MemberTable and MemberDetail UI components.
• Introduced placeholder member data and GitHub contributions chart rendering.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[pgovindu08]

@copilot apply changes based on the comments in this thread

[Copilot]

@copilot apply changes based on the comments in this thread

Applied all the unresolved review changes in commit a43bae0:

1. Filters button — added disabled prop so it no longer renders as a clickable but non-functional control.
2. maxWidth: 'lg' in sx — replaced the outer Box with MUI's Container component using maxWidth="lg", which properly resolves the breakpoint via the MUI theme.
3. "GitHub" capitalization — was already corrected in a prior commit via rebase.

The mock data concern (lines 36–39) is noted — the data is intentional placeholder content while the real data source is wired up.