adding listvfs to extra helpful message

cli/input.rs

@@ -168,71 +168,6 @@ pub fn get_io(db_location: DbLocation, io_choice: &str) -> anyhow::Result<Arc<dy
     })
 }
 
-pub const _HELP_MSG: &str = r#"
-Limbo SQL Shell Help
-==============
-Welcome to the Limbo SQL Shell! You can execute any standard SQL command here.
-In addition to standard SQL commands, the following special commands are available:
-
-Special Commands:
------------------
-.quit                      Stop interpreting input stream and exit
-.show                      Display current settings
-.open <database_file>      Open and connect to a database file
-.mode <mode>               Change the output mode. Available modes are 'list' and 'pretty'
-.schema <table_name>       Show the schema of the specified table
-.tables <pattern>          List names of tables matching LIKE pattern TABLE
-.opcodes                   Display all the opcodes defined by the virtual machine
-.cd <directory>            Change the current working directory
-.nullvalue <string>        Set the value to be displayed for null values
-.echo on|off               Toggle echo mode to repeat commands before execution
-.import --csv FILE TABLE   Import csv data from FILE into TABLE
-.dump                      Output database contents as SQL
-.load                      Load an extension library
-.help                      Display this help message
-
-Usage Examples:
----------------
-1. To quit the Limbo SQL Shell:
-   .quit
-
-2. To open a database file at path './employees.db':
-   .open employees.db
-
-3. To view the schema of a table named 'employees':
-   .schema employees
-
-4. To list all tables:
-   .tables
-
-5. To list all available SQL opcodes:
-   .opcodes
-
-6. To change the current output mode to 'pretty':
-   .mode pretty
-
-7. Send output to STDOUT if no file is specified:
-   .output
-
-8. To change the current working directory to '/tmp':
-   .cd /tmp
-
-9. Show the current values of settings:
-   .show
-
-10. To import csv file 'sample.csv' into 'csv_table' table:
-   .import --csv sample.csv csv_table
-
-11. To display the database contents as SQL:
-   .dump
-
-12. To load an extension library:
-   .load /target/debug/liblimbo_regexp
-
-Note:
-- All SQL commands must end with a semicolon (;).
-- Special commands do not require a semicolon."#;
-
 pub const BEFORE_HELP_MSG: &str = r#"
 
 Limbo SQL Shell Help
@@ -277,6 +212,9 @@ pub const AFTER_HELP_MSG: &str = r#"Usage Examples:
 12. To load an extension library:
    .load /target/debug/liblimbo_regexp
 
+13. To list all available VFS:
+   .listvfs
+
 Note:
 - All SQL commands must end with a semicolon (;).
 - Special commands start with a dot (.) and are not required to end with a semicolon."#;