Reorg files and create durable-cr sub-dir

Author: crandmck

docs/durable-cr.md renamed to docs/durable-cr/index.md

@@ -1,5 +1,5 @@
 ---
-id: durable-cr
+id: index
 title: Durable Content Credentials
 ---
 

docs/soft-bindings.mdx renamed to docs/durable-cr/soft-bindings.mdx

@@ -47,6 +47,6 @@ hide_table_of_contents: true
   - [Is TrustMark compatible with blockchain technology?](#is-trustmark-compatible-with-blockchain-technology)
   - [Can TrustMark be used for NFT provenance?](#can-trustmark-be-used-for-nft-provenance)
 
-import Faq from './trustmark/FAQ.md';
+import Faq from '../trustmark/FAQ.md';
 
 <Faq name="faq" />

docs/trustmark-faq.mdx renamed to docs/durable-cr/trustmark-faq.mdx

@@ -298,18 +298,18 @@ const sidebars = {
     {
       type: 'category',
       label: 'Durable Content Credentials',
-      link: { type: 'doc', id: 'durable-cr' },
+      link: { type: 'doc', id: 'durable-cr/index' },
       collapsed: true,
       items: [
         {
           type: 'doc',
           label: 'Watermarking and fingerprinting',
-          id: 'sb-algs',
+          id: 'durable-cr/sb-algs',
         },
         {
           type: 'category',
           label: 'TrustMark watermarking',
-          link: { type: 'doc', id: 'trustmark-intro' },
+          link: { type: 'doc', id: 'durable-cr/trustmark-intro' },
           collapsed: true,
           items: [
             {
@@ -344,7 +344,7 @@ const sidebars = {
             },
             {
               type: 'doc',
-              id: 'tm-faq',
+              id: 'durable-cr/tm-faq',
               label: 'FAQ',
             },
             {