feat: improve error messages for wrong adapter

[tconbeer]

closes #401

now shows this:

╭─ DuckDB couldn't connect to your database. ──────────────────────────────────────────────────────────────────────────╮
│ DuckDB raised the following error when trying to open one or more database files:                                    │
│ ---                                                                                                                  │
│ IO Error: Extension "/home/tco/.duckdb/extensions/v0.8.1/linux_amd64_gcc4/sqlite_scanner.duckdb_extension" not       │
│ found.                                                                                                               │
│ Extension "sqlite" is an existing extension.                                                                         │
│                                                                                                                      │
│ Install it first using "INSTALL sqlite".                                                                             │
│ ---                                                                                                                  │
│                                                                                                                      │
│ Did you mean to use Harlequin's sqlite adapter instead? Maybe try:                                                   │
│ harlequin -a sqlite small.sqlite noahs.sqlite                                                                        │
╰──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯

or this:

╭─ SQLite couldn't connect to your database. ──────────────────────────────────────────────────╮
│ sqlite raised the following error when trying to open file:///home/tco/open/harlequin/f1.db: │
│ ---                                                                                          │
│ file is not a database                                                                       │
│ ---                                                                                          │
│                                                                                              │
│ Did you mean to use Harlequin's DuckDB adapter instead? Maybe try:                           │
│ harlequin -a duckdb f1.db                                                                    │
│ or:                                                                                          │
│ harlequin -P None f1.db                                                                      │
╰──────────────────────────────────────────────────────────────────────────────────────────────╯