feature (sponsors): Add sponsor command.

Add new sponsor prompts.
Add new sponsor command.
Add `sponsor_text` table.
Add sponsor global config settings.
Update `Setting.command` to use new `widget`.
Add custom `cmd_str` support to `Message` `SettingType`.

data/migration/v10-v11/migration.sql

@@ -0,0 +1,9 @@
+-- Sponsor Data {{{
+CREATE TABLE sponsor_text(
+  ID INTEGER PRIMARY KEY DEFAULT 0,
+  prompt_text TEXT,
+  command_response TEXT
+);
+-- }}}
+
+INSERT INTO VersionHistory (version, author) VALUES (11, 'v10-v11 migration');

data/schema.sql

@@ -4,7 +4,7 @@ CREATE TABLE VersionHistory(
   time TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP NOT NULL,
   author TEXT
 );
-INSERT INTO VersionHistory (version, author) VALUES (10, 'Initial Creation');
+INSERT INTO VersionHistory (version, author) VALUES (11, 'Initial Creation');
 
 
 CREATE OR REPLACE FUNCTION update_timestamp_column()
@@ -38,6 +38,15 @@ CREATE TABLE global_guild_blacklist(
 -- }}}
 
 
+-- Sponsor Data {{{
+CREATE TABLE sponsor_text(
+  ID INTEGER PRIMARY KEY DEFAULT 0,
+  prompt_text TEXT,
+  command_response TEXT
+);
+-- }}}
+
+
 -- User configuration data {{{
 CREATE TABLE user_config(
   userid BIGINT PRIMARY KEY,