docs(NODE-7344): add experimental platform support to Readme (#296)

Co-authored-by: Bailey Pearson <bailey.pearson@gmail.com>

Author: PavelSafronov

README.md

@@ -55,20 +55,28 @@ Now you can install `kerberos` with the following:
 npm install kerberos
 ```
 
+#### Support Strategy
+
+There are two support tiers:
+
+- **Tier 1**: These platforms represent the majority of our users. Test failures on tier 1 platforms will block
+releases.
+- **Experimental**: Test suite may not exist or may not pass. Test failures on experimental platforms
+do not block releases. Contributions to improve support for these platforms are welcome.
+
 #### Prebuild Platforms
 
 Below are the platforms that are available as prebuilds on each github release.
 `prebuild-install` downloads these automatically depending on the platform you are running npm install on.
 
-- Linux GLIBC 2.28 or later
-- s390x
-- arm64
-- x64
-- MacOS universal binary
-- x64
-- arm64
-- Windows
-- x64
+| Operating System          | Platform | Support Type |
+| ------------------------- | -------- | ------------ |
+| Linux GLIBC 2.28 or later |    s390x |       Tier 1 |
+| Linux GLIBC 2.28 or later |    arm64 |       Tier 1 |
+| Linux GLIBC 2.28 or later |      x64 |       Tier 1 |
+| MacOS universal binary    |      x64 |       Tier 1 |
+| MacOS universal binary    |    arm64 |       Tier 1 |
+| Windows                   |      x64 |       Tier 1 |
 
 ### Release Integrity
 

etc/README.hbs

@@ -55,20 +55,28 @@ Now you can install `kerberos` with the following:
 npm install kerberos
 ```
 
+#### Support Strategy
+
+There are two support tiers:
+
+- **Tier 1**: These platforms represent the majority of our users. Test failures on tier 1 platforms will block
+releases.
+- **Experimental**: Test suite may not exist or may not pass. Test failures on experimental platforms
+do not block releases. Contributions to improve support for these platforms are welcome.
+
 #### Prebuild Platforms
 
 Below are the platforms that are available as prebuilds on each github release.
 `prebuild-install` downloads these automatically depending on the platform you are running npm install on.
 
-- Linux GLIBC 2.28 or later
-- s390x
-- arm64
-- x64
-- MacOS universal binary
-- x64
-- arm64
-- Windows
-- x64
+| Operating System          | Platform | Support Type |
+| ------------------------- | -------- | ------------ |
+| Linux GLIBC 2.28 or later |    s390x |       Tier 1 |
+| Linux GLIBC 2.28 or later |    arm64 |       Tier 1 |
+| Linux GLIBC 2.28 or later |      x64 |       Tier 1 |
+| MacOS universal binary    |      x64 |       Tier 1 |
+| MacOS universal binary    |    arm64 |       Tier 1 |
+| Windows                   |      x64 |       Tier 1 |
 
 ### Release Integrity