feat(i18n): add i18n on server side

- remove the hardcoded list of locales in favor of a discovry on start time
    - server will stop on badly formatted locale .json
    - add server.* entries for serer side translation

    server side translation will be used for templating and email
    note: no json in some embded html (like in /magic), amount of work was similar

Cargo.lock

@@ -8,6 +8,12 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8b5ace29ee3216de37c0546865ad08edef58b0f9e76838ed8959a84a990e58c5"
 
+[[package]]
+name = "accept-language"
+version = "3.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f27d075294830fcab6f66e320dab524bc6d048f4a151698e153205559113772"
+
 [[package]]
 name = "adler2"
 version = "2.0.1"
@@ -970,6 +976,16 @@ dependencies = [
  "hybrid-array",
 ]
 
+[[package]]
+name = "borsh"
+version = "1.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cfd1e3f8955a5d7de9fab72fc8373fade9fb8a703968cb200ae3dc6cf08e185a"
+dependencies = [
+ "bytes",
+ "cfg_aliases",
+]
+
 [[package]]
 name = "brotli"
 version = "8.0.2"
@@ -3701,6 +3717,7 @@ dependencies = [
 name = "oxicloud"
 version = "0.6.0"
 dependencies = [
+ "accept-language",
  "aes-gcm",
  "argon2",
  "async-compression",
@@ -3758,6 +3775,7 @@ dependencies = [
  "serde",
  "serde_json",
  "sha2 0.11.0",
+ "smol_str",
  "socket2 0.6.3",
  "sqlx",
  "tempfile",
@@ -5112,6 +5130,16 @@ version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b7c388c1b5e93756d0c740965c41e8822f866621d41acbdf6336a6a168f8840c"
 
+[[package]]
+name = "smol_str"
+version = "0.3.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4aaa7368fcf4852a4c2dd92df0cace6a71f2091ca0a23391ce7f3a31833f1523"
+dependencies = [
+ "borsh",
+ "serde_core",
+]
+
 [[package]]
 name = "socket2"
 version = "0.5.10"