add: notify, minesweeper, migrations

dev: renames, refactors
change: remind optimized wait

src/NadekoBot/data/strings/commands/commands.en-US.yml

@@ -4830,4 +4830,27 @@ xplevelset:
     - level:
         desc: "The level to set the user to."
     - user:
-        desc: "The user to set the level of."
+        desc: "The user to set the level of."
+temprole:
+  desc: |-
+    Grants a user a temporary role for the specified number of time.
+    The role must exist and be lower in the role hierarchy than your highest role.
+  ex:
+    - '15m @User Jail'
+    - '7d @Newbie Trial Member'
+  params:
+    - days:
+        desc: "The time after which the role is automatically removed."
+    - user:
+        desc: "The user to give the role to."
+    - role:
+        desc: "The role to give to the user."
+minesweeper:
+  desc: |-
+    Creates a spoiler-based minesweeper mini game.
+    You may specify the number of mines.
+  ex:
+    - '15'
+  params:
+    - mines:
+        desc: "The number of mines to create."