Fix for wave export

Fixed critical errors in WAV file headers. Now files with ADPCM, XMA2 and Extensible formats open correctly in sound editors (GoldWave, etc.), thanks to: Addition and correct filling of fact-chunk. Precise calculation of chunk sizes and number of samples. Format conformity to Microsoft WAVEFORMATEX and RIFF WAVE specifications.

1.0.7m

Added scroll bars to the .bimage preview window, allowing you to see the entire images when this tool is running in windowed mode or on a small screen.
Added panel with bimage information (image size in pixels, texture type and format)
Extended idwav player functionality (now displays file duration in seconds, file format, number of channels, sample rate, added simple progress bar)
Fixed an error that occurred when cancelling file export after selecting a path for saving.
Added preview of .dat font files (48.dat) as a table of characters with their metrics, as well as the number of glyphs in the font, ascender and descender values.
Added Help - About menu item to the main window of the tool, which opens a small window with the version number of this tool, its author and a link to github.