foundation: add library tiers page

Author: thunderbiscuit

docs/.vuepress/config.js

@@ -33,6 +33,7 @@ const foundationSidebar = [
     children: [
       ['/foundation/about.md', 'About Us'],
       ['/foundation/members.md', 'Members'],
+      ['/foundation/libraries.md', 'Our Libraries'],
       ['/foundation/grantees.md', 'Grantees'],
       ['/foundation/grants.md', 'Grants'],
       ['/foundation/pgp.md', 'PGP Keys'],

docs/foundation/libraries.md

@@ -0,0 +1,94 @@
+---
+sidebar: true
+tagline: "Foundation"
+description: "The libraries we maintain."
+prev: false
+next: false
+editLink: false
+lastUpdated: false
+---
+
+# Our Libraries
+
+The primary purpose of the Foundation is to:
+
+1. advance the Bitcoin software development industry by fostering innovation, promoting best practices, and improving the overall ecosystem; 
+2. support the promotion, research, development, maintenance, and security of the Bitcoin Dev Kit (BDK) libraries and other projects supporting the Bitcoin software industry (the "Projects"); 
+3. support and empower Bitcoin software developers through educational initiatives, open-source project support, and industry-wide collaboration; 
+4. manage the technical infrastructure underlying the development of the Projects; 
+5. manage and steward the BDK trademark and other assets of the Foundation;
+6. undertake such other activities as may from time to time be appropriate to further the purposes and achieve the goals set forth above. 
+
+In furtherance of these efforts, the Foundation shall seek to solicit the participation of all interested parties on a fair, equitable, and open basis.
+
+To these ends we provide the technical infrastructure to maintain a number of software projects across different maturity levels. To help you navigate these projects we've categorized them into three distinct groups. 
+
+## Library Categories
+
+### The `Foundational` Tier
+
+The libraries that form the core of the BDK ecosystem. These repositories receive the highest level of attention and maintenance.
+
+**What to expect:**
+
+- Two official maintainers
+- Maintainers are supported by grant funding from the BDK Foundation
+- A robust community of users and volunteer maintainers
+- Comprehensive test coverage and CI/CD
+- Security updates and dependency maintenance
+- Security updates back ported to prior major release
+- Active monitoring and fast response to issues
+- Semantic versioning with clear release notes
+- Data schema stability guarantees and clear migration paths
+- Extensive documentation (API, tutorials, guides, etc.) with code examples
+- Example applications
+
+### The `Community` Tier
+
+Well-maintained libraries that serve more specific use cases and see less frequent updates. These repositories rely more on community contributions for maintenance.
+
+**What to expect:**
+
+- Two official maintainers
+- Maintained by volunteers from the community
+- Maintainers may receive grant funding from the BDK Foundation
+- A robust community of users and volunteer maintainers
+- Comprehensive test coverage and CI/CD
+- Security updates and dependency maintenance
+- Semantic versioning with clear release notes
+- Response to issues within a reasonable timeframe
+- Documentation (API) with code examples
+
+### The `Experimental` Tier
+
+Early-stage projects. These may be unstable or undergoing rapid iteration. These projects aim to over time become either `Foundational` or `Community` projects, but are not yet ready.
+
+**What to expect:**
+
+- At least one official maintainer
+- Maintained by volunteers from the community
+- Incomplete or evolving APIs
+- Only basic test coverage and CI/CD
+- Limited or no backward compatibility guarantees
+- Minimal documentation
+- Potential for major changes or deprecation
+
+## Table 
+
+|                                    | Foundational | Community | Experimental | 
+|------------------------------------|:------------:|:---------:|:------------:|
+| Maintainers                        | 2            | 2         | 1            | 
+| BDKF Grant Funding                 | Yes          | Optional  | No           | 
+| Community Support                  | Yes          | Yes       | No           |
+| Comprehensive Testing and CI/CD    | Yes          | Yes       | No           | 
+| Security and Dependency Updates    | Yes          | Yes       | No           |
+| Semantic Versioning, Release Notes | Yes          | Yes       | No           | 
+| API Documentation, Code Examples   | Yes          | Yes       | No           |
+| Back-ported Security Updates       | Yes          | No        | No           |
+| Fast Response to Issues            | Yes          | No        | No           |
+| Data Schema Stability, Migration   | Yes          | No        | No           |
+| Tutorials, Guides, Example Apps    | Yes          | No        | No           |
+
+## Where to Find This Information
+
+You can find the tiers assigned to each library in our [GitHub Org](https://github.com/bitcoindevkit) under the [Libraries heading](https://github.com/bitcoindevkit#our-core-libraries). There you'll also find information on the specific maintainers assigned to each library.