Reorganize documentation for new website (#213)

This PR should be merged after the new website is deployed.

- [x] Rename files
- [x] Add front matter section to all `.md` files in the book (necessary for Zola)
- [x] Change all internal links to use Zola's linking system that checks broken links
- [x] Some updates to documentation contents and organization

Co-authored-by: Alex Auvolat <alex@adnab.me>
Reviewed-on: https://git.deuxfleurs.fr/Deuxfleurs/garage/pulls/213
Co-authored-by: Alex <alex@adnab.me>
Co-committed-by: Alex <alex@adnab.me>

1 files changed, 108 insertions, 0 deletions

diff --git a/doc/book/working-documents/compatibility-target.md b/doc/book/working-documents/compatibility-target.md
new file mode 100644
index 00000000..836f3e30
--- /dev/null
+++ b/doc/book/working-documents/compatibility-target.md
@@ -0,0 +1,108 @@
++++
+title = "S3 compatibility target"
+weight = 5
++++
+
+If there is a specific S3 functionnality you have a need for, feel free to open
+a PR to put the corresponding endpoints higher in the list.  Please explain
+your motivations for doing so in the PR message.
+
+| Priority                   | Endpoints  |
+| -------------------------- | --------- |
+| **S-tier** (high priority) | |
+| 							 | HeadBucket |
+| 							 | GetBucketLocation |
+| 							 | CreateBucket |
+| 							 | DeleteBucket |
+| 							 | ListBuckets |
+| 							 | ListObjects |
+| 							 | ListObjectsV2 |
+| 							 | HeadObject |
+| 							 | GetObject |
+| 							 | PutObject |
+| 							 | CopyObject |
+| 							 | DeleteObject |
+| 							 | DeleteObjects |
+| 							 | CreateMultipartUpload |
+| 							 | CompleteMultipartUpload |
+| 							 | AbortMultipartUpload |
+| 							 | UploadPart |
+| 							 | [*ListMultipartUploads*](https://git.deuxfleurs.fr/Deuxfleurs/garage/issues/103) |
+| 							 | [*ListParts*](https://git.deuxfleurs.fr/Deuxfleurs/garage/issues/103) |
+| **A-tier**                 | |
+| 							 | GetBucketCors |
+| 							 | PutBucketCors |
+| 							 | DeleteBucketCors |
+| 							 | UploadPartCopy |
+| 							 | GetBucketWebsite |
+| 							 | PutBucketWebsite |
+| 							 | DeleteBucketWebsite |
+| ~~~~~~~~~~~~~~~~~~~~~~~~~~ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
+| **B-tier** | |
+| 							 | GetBucketAcl |
+| 							 | PutBucketAcl |
+| 							 | GetObjectLockConfiguration |
+| 							 | PutObjectLockConfiguration |
+| 							 | GetObjectRetention |
+| 							 | PutObjectRetention |
+| 							 | GetObjectLegalHold |
+| 							 | PutObjectLegalHold |
+| **C-tier** | |
+| 							 | GetBucketVersioning |
+| 							 | PutBucketVersioning |
+| 							 | ListObjectVersions |
+| 							 | GetObjectAcl |
+| 							 | PutObjectAcl |
+| 							 | GetBucketLifecycleConfiguration |
+| 							 | PutBucketLifecycleConfiguration |
+| 							 | DeleteBucketLifecycle |
+| **garbage-tier**   | |
+| 							 | DeleteBucketEncryption |
+| 							 | DeleteBucketAnalyticsConfiguration |
+| 							 | DeleteBucketIntelligentTieringConfiguration |
+| 							 | DeleteBucketInventoryConfiguration |
+| 							 | DeleteBucketMetricsConfiguration |
+| 							 | DeleteBucketOwnershipControls |
+| 							 | DeleteBucketPolicy |
+| 							 | DeleteBucketReplication |
+| 							 | DeleteBucketTagging |
+| 							 | DeleteObjectTagging |
+| 							 | DeletePublicAccessBlock |
+| 							 | GetBucketAccelerateConfiguration |
+| 							 | GetBucketAnalyticsConfiguration |
+| 							 | GetBucketEncryption |
+| 							 | GetBucketIntelligentTieringConfiguration |
+| 							 | GetBucketInventoryConfiguration |
+| 							 | GetBucketLogging |
+| 							 | GetBucketMetricsConfiguration |
+| 							 | GetBucketNotificationConfiguration |
+| 							 | GetBucketOwnershipControls |
+| 							 | GetBucketPolicy |
+| 							 | GetBucketPolicyStatus |
+| 							 | GetBucketReplication |
+| 							 | GetBucketRequestPayment |
+| 							 | GetBucketTagging |
+| 							 | GetObjectTagging |
+| 							 | GetObjectTorrent |
+| 							 | GetPublicAccessBlock |
+| 							 | ListBucketAnalyticsConfigurations |
+| 							 | ListBucketIntelligentTieringConfigurations |
+| 							 | ListBucketInventoryConfigurations |
+| 							 | ListBucketMetricsConfigurations |
+| 							 | PutBucketAccelerateConfiguration |
+| 							 | PutBucketAnalyticsConfiguration |
+| 							 | PutBucketEncryption |
+| 							 | PutBucketIntelligentTieringConfiguration |
+| 							 | PutBucketInventoryConfiguration |
+| 							 | PutBucketLogging |
+| 							 | PutBucketMetricsConfiguration |
+| 							 | PutBucketNotificationConfiguration |
+| 							 | PutBucketOwnershipControls |
+| 							 | PutBucketPolicy |
+| 							 | PutBucketReplication |
+| 							 | PutBucketRequestPayment |
+| 							 | PutBucketTagging |
+| 							 | PutObjectTagging |
+| 							 | PutPublicAccessBlock |
+| 							 | RestoreObject |
+| 							 | SelectObjectContent |