Move crates/sdk to sdks/rust (#3181)

# Description of Changes

I'm moving `crates/sdk` to `sdks/rust` to be more in line with where the
rest of our SDKs are listed. I updated the corresponding paths etc. that
pointed to the previous location.

This PR is based on
#3185, because if we
merge this without that, our release scripts will be broken.

# API and ABI breaking changes

None

# Expected complexity level and risk

1

# Testing

- [x] Existing CI passes

---------

Co-authored-by: Zeke Foppa <bfops@users.noreply.github.com>

Author: bfops

Cargo.toml

@@ -24,7 +24,7 @@ members = [
   "crates/query",
   "crates/sats",
   "crates/schema",
-  "crates/sdk",
+  "sdks/rust",
   "crates/snapshot",
   "crates/sqltest",
   "crates/sql-parser",
@@ -41,9 +41,9 @@ members = [
   "modules/quickstart-chat",
   "modules/sdk-test",
   "modules/sdk-test-connect-disconnect",
-  "crates/sdk/tests/test-client",
-  "crates/sdk/tests/test-counter",
-  "crates/sdk/tests/connect_disconnect_client",
+  "sdks/rust/tests/test-client",
+  "sdks/rust/tests/test-counter",
+  "sdks/rust/tests/connect_disconnect_client",
   "tools/upgrade-version", "crates/codegen",
 ]
 default-members = ["crates/cli", "crates/standalone", "crates/update"]

crates/sdk/Cargo.toml sdks/rust/Cargo.tomlcrates/sdk/Cargo.toml renamed to sdks/rust/Cargo.toml

@@ -40,7 +40,7 @@ cursive.workspace = true
 futures-channel.workspace = true
 
 # for tests
-spacetimedb-testing = { path = "../testing" }
+spacetimedb-testing = { path = "../../crates/testing" }
 
 [lints]
 workspace = true