pcbnew: Having a corrupt footprint file disables entire library entry / directory

Description

This came to light with the bug leaving corrupted files. Pcbnew will show an error reading a broken footprint file which is good. But as result the entire library is 'disabled' (shown empty). I'm guessing some try-catch block should be a bit finer grained to only stop the library loading for the one file, not the entire library directory.

Steps to reproduce

1. Have a corrupt footprint (truncate, typo, etc)
2. Start KiCad
3. Open pcbnew

KiCad Version

Application: KiCad

Version: (6.99.0-4236-gbe8bbcaac3), release build

Libraries:
	wxWidgets 3.2.1
	FreeType 2.12.1
	HarfBuzz 5.3.1
	FontConfig 2.14.1
	libcurl/7.86.0 OpenSSL/3.0.7 zlib/1.2.13 brotli/1.0.9 zstd/1.5.2 libidn2/2.3.4 libpsl/0.21.1 (+libidn2/2.3.4) libssh2/1.10.0 nghttp2/1.50.0

Platform: Linux 5.18.1-arch1-1 x86_64, 64 bit, Little endian, wxGTK, KDE, wayland

Build Info:
	Date: Nov  7 2022 20:26:31
	wxWidgets: 3.2.1 (wchar_t,wx containers) GTK+ 3.24
	Boost: 1.80.0
	OCC: 7.6.3
	Curl: 7.86.0
	ngspice: 37
	Compiler: GCC 12.2.0 with C++ ABI 1017

Build settings:
	KICAD_USE_EGL=ON
	KICAD_SPICE=ON