Consolidate most repository types into a repo module.

Having them contained in the individual endpoint groups conveyed an unintended sense that their intended scope was _only_ that endpoint group. It also made most repo-related import paths _quite_ long. This splits up the repos as follows:

* "General applicability" repos - those that are only loosely connected to a single task, and are likely to be shared between tasks - go in crate::repo.

* Specialized repos - those tightly connected to a specific task - go in the module for that task, under crate::PATH::repo.

In both cases, each repo goes in its own submodule, to make it easier to use the module name as a namespace.

Which category a repo goes in is a judgment call. `crate::channel::repo::broadcast` (formerly `channel::repo::messages`) is used outside of `crate::channel`, for example, but its main purpose is to support channel message broadcasts. It could arguably live under `crate::event::repo::channel`, but the resulting namespace is less legible to me.

1 files changed, 26 insertions, 0 deletions

diff --git a/.sqlx/query-849eaadd3659346c3d98ce6af1d187fa27cb8d56c8e1c5a3db2f57abba2a35b1.json b/.sqlx/query-849eaadd3659346c3d98ce6af1d187fa27cb8d56c8e1c5a3db2f57abba2a35b1.json
new file mode 100644
index 0000000..6b7978d
--- /dev/null
+++ b/.sqlx/query-849eaadd3659346c3d98ce6af1d187fa27cb8d56c8e1c5a3db2f57abba2a35b1.json
@@ -0,0 +1,26 @@
+{
+  "db_name": "SQLite",
+  "query": "\n                select\n                    login.id as \"id: login::Id\",\n                    name\n                from login\n                join token on login.id = token.login\n                where token.secret = $1\n            ",
+  "describe": {
+    "columns": [
+      {
+        "name": "id: login::Id",
+        "ordinal": 0,
+        "type_info": "Text"
+      },
+      {
+        "name": "name",
+        "ordinal": 1,
+        "type_info": "Text"
+      }
+    ],
+    "parameters": {
+      "Right": 1
+    },
+    "nullable": [
+      false,
+      false
+    ]
+  },
+  "hash": "849eaadd3659346c3d98ce6af1d187fa27cb8d56c8e1c5a3db2f57abba2a35b1"
+}