Windows build issue with extension formats

The new 'formats' extension does not build on windows. A possibility is that the '.def' file needs to be renamed to match the library name (i.e. rename 'extension-formats.def' to 'libsqlite-formats.def'). I do not have a Windows build environment to test this and it is just a guess!

Useful extra information

I'm opening this issue because:

• DB4S is crashing
• DB4S has a bug
• DB4S needs a feature
• [X ] DB4S has another problem

I'm using DB4S on:

• [X ] Windows: ( version: ___ )
• Linux: ( distro: ___ )
• Mac OS: ( version: ___ )
• Other: ___

I'm using DB4S version:

• 3.11.1
• 3.11.0
• 3.10.1
• Other: ___

I have also:

• Tried out the latest nightly version: https://github.com/sqlitebrowser/sqlitebrowser#nightly-builds
• Searched for an existing similar issue: https://github.com/sqlitebrowser/sqlitebrowser/issues?utf8=%E2%9C%93&q=is%3Aissue%20

Start by inspecting extension-formats.def and the Windows build configuration for the formats extension, then reproduce the build in a Windows environment. Check whether the definition file must match the library name; done means the new formats extension builds successfully on Windows.