Add Calibre blueprint with Docker Compose and configuration files

- Introduced Docker Compose setup for Calibre service, including environment variables and volume configuration.
- Added logo for Calibre.
- Created template.toml for Calibre with default variables for configuration.
- Updated meta.json to include Calibre with detailed description, logo, and relevant links.

blueprints/calibre/template.toml

@@ -0,0 +1,12 @@
+[variables]
+main_domain = "${domain}"
+password = "${password:16}"
+
+[config]
+[[config.domains]]
+serviceName = "calibre"
+port = 8080
+host = "${main_domain}"
+
+[config.env]
+PASSWORD = "${password}"