parseConnectionString not exported in jsr version

I need to parse the connection string so I can tweak the options a little but the parse util is not exported when using jsr.

This line here:
https://github.com/denodrivers/mongo/blob/main/src/client.ts#L47

There is no way for me to import the parse function from this module through JSR. It would be really nice if it could be exported so I could use it.

Start at src/client.ts line 47 and inspect how parseConnectionString is defined and exposed in the JSR package. Check the package's JSR entry points or exports, then verify that users can import the parser and still adjust the parsed options as requested.

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