Feat: Add PDP Subgraph and subgraph client

[silent-cipher]

Features:

• Fully functional Subgraph ready to be deployed on mainnet and calibnet
• ready to use subgraph gql apis client
• Documentation to deploy their own subgraph and run the client. It also covers how you can update it for your own use cases if needed.

Also, fixes #65

[Copilot]

Pull Request Overview

This pull request introduces a new subgraph and accompanying client for interacting with PDP data across mainnet and calibration networks. Key changes include:

• Added React components to display recent providers, recent proof sets, and network stats.
• Introduced an API service module to query the subgraph.
• Included project configuration files (Prettier, ESLint, PostCSS), a main application entry point, and detailed deployment documentation.

Reviewed Changes

Copilot reviewed 89 out of 99 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
subgraph-client/src/components/Landing/RecentProvidersTable.tsx	Table component displaying recent providers.
subgraph-client/src/components/Landing/RecentProofSetsTable.tsx	Table component displaying recent proof sets.
subgraph-client/src/components/Landing/NetworkStatsCard.tsx	Card component showing network metrics with a computed PDP proofs value.
subgraph-client/src/api/apiService.ts	API service for fetching providers and proof sets from the subgraph.
subgraph-client/src/App.tsx	Main application entry point setting up routes and notifications.
subgraph-client/prettier.config.js	Prettier configuration for code formatting.
subgraph-client/postcss.config.js	PostCSS configuration for TailwindCSS and autoprefixer.
subgraph-client/index.html	HTML template with meta tags for SEO and social sharing.
subgraph-client/.eslintrc.cjs	ESLint configuration tailored for the project.
docs/subgraph/deployment.md	Documentation detailing subgraph deployment and client usage.

Files not reviewed (10)

• subgraph-client/.env.example: Language not supported
• subgraph-client/.gitignore: Language not supported
• subgraph-client/.prettierignore: Language not supported
• subgraph-client/.prettierrc: Language not supported
• subgraph-client/Dockerfile: Language not supported
• subgraph-client/components.json: Language not supported
• subgraph-client/package.json: Language not supported
• subgraph-client/public/robots.txt: Language not supported
• subgraph-client/public/site.webmanifest: Language not supported
• subgraph-client/public/sitemap.xml: Language not supported

Comments suppressed due to low confidence (1)

subgraph-client/src/components/Landing/NetworkStatsCard.tsx:71

• [nitpick] Consider extracting the magic number '5' into a named constant or configuration value for improved clarity and maintainability.

value={(Number(metrics.totalProofs) * 5).toLocaleString()}

[jennijuju]

any reason why we shouldnt merge this?

[silent-cipher]

@jennijuju now there doesn't seem any reason.

[ZenGround0]

FYI I'm not looking at this too closely. Nothing seems obviously wrong.

[jennijuju]

should we land this to main? @kaola526