feature/1214 session fetch refactor (#1215)

* chore(docs): remove token economy guide

* refactor(context): update GatewayContext to use Querier interface

* chore(database): update schema path

* docs: Update READMEs for x/did, x/dwn, and x/svc with UCAN integration

* chore(pkg): update database scope name

* refactor(did): optimize GenesisState proto methods

* refactor(svc): update Service proto to use repeated fields

* refactor(api): rename MsgSpawn to MsgInitialize

internal/database/sqlc.yaml

@@ -1,19 +1,26 @@
 version: "2"
 sql:
   - engine: "sqlite"
-    queries: "./sink/query_vault.sql"
-    schema: "./sink/schema_vault.sql"
+    queries: "./sink/vault/query.sql"
+    schema: "./sink/vault/schema.sql"
     gen:
       go:
+        emit_interface: true
+        emit_json_tags: true
         package: "motrorm"
         out: "motrorm"
 
   - engine: "postgresql"
-    queries: "./sink/query_highway.sql"
-    schema: "./sink/schema_highway.sql"
+    queries: "./sink/highway/query.sql"
+    schema: "./sink/highway/schema.sql"
     gen:
       go:
+        emit_all_enum_values: true
+        emit_enum_valid_method: true
+        emit_json_tags: true
+        emit_interface: true
+        emit_result_struct_pointers: true
+        omit_unused_structs: true
         package: "hwayorm"
         out: "hwayorm"
-        sql_package: "pgx/v5" 
-
+        sql_package: "pgx/v5"