filesystems: add new category for file systems and related utilities

The filesystems category houses file systems and file system utilities.
It is added mainly to turn the sysutils/fusefs-* pseudo-category into
a proper one, but is also useful for the sundry of other file systems
related ports found in the tree.

Ports that seem like they belong there are moved to the new category.
Two ports, sysutils/fusefs-funionfs and sysutils/fusefs-fusepak are
not moved as they currently don't fetch and don't have TIMESTAMP set
in their distinfo, but that is required to be able to push a rename
of the port by the pre-receive hook.

Approved by:	portmgr (rene)
Reviewed by:	mat
Pull Request:	https://github.com/freebsd/freebsd-ports/pull/302
PR:		281988

sysutils/fusefs-squashfuse: Improve port

* Switch from PORTVERSION to DISTVERSION
* Use USES= fuse:3 helper
* Remove USES= autoreconf
* Define dependency for liblzo2, liblz4 and libzstd
* Remove GNU_CONFIGURE_MANPREFIX
* Don't build static libs
* Set pkgconfigdir

PR:		282349
Reviewed by:	Jesse Smith <jsmith@resonatingmedia.com> (maintainer)

sysutils/fusefs-squashfuse: Update 0.1.104 --> 0.5.2

PR: 282339

Approved by:	maintainer

sysutils/fusefs-squashfuse: Moved man to share/man

Approved by:    portmgr (blanket)

Remove WWW entries moved into port Makefiles

Commit b7f05445c00f has added WWW entries to port Makefiles based on
WWW: lines in pkg-descr files.

This commit removes the WWW: lines of moved-over URLs from these
pkg-descr files.

Approved by:		portmgr (tcberner)

Add WWW entries to port Makefiles

It has been common practice to have one or more URLs at the end of the
ports' pkg-descr files, one per line and prefixed with "WWW:". These
URLs should point at a project website or other relevant resources.

Access to these URLs required processing of the pkg-descr files, and
they have often become stale over time. If more than one such URL was
present in a pkg-descr file, only the first one was tarnsfered into
the port INDEX, but for many ports only the last line did contain the
port specific URL to further information.

There have been several proposals to make a project URL available as
a macro in the ports' Makefiles, over time.

sysutils/fusefs-squashfuse: Update to 0.1.104

https://github.com/vasi/squashfuse/releases/tag/0.1.104

Port changes:
- Use official tarball since those automatically generated by GitHub
  can, on rare occasions, change.

PR:		264551
Approved by:	jsmith@resonatingmedia.com (maintainer)
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D35438

One more small cleanup, forgotten yesterday.
Reported by:	lwhsu

Remove # $FreeBSD$ from Makefiles.

sysutils/fusefs=squashfsfuse: Update to 0.1.103

PR:		ports/254281
Approved by:	jsmith@resonatingmedia.com (maintainer)

Most commonly used build systems support silent builds, when they
hide actual commands executed and only show short summary line (like
"CC foo.c"). CMake and ninja enable this by default, some autotools
using ports do as well. This is unacceptable because we need complete
build logs at any time, so we now switch to verbose build logs
unconditionally. Note that this change deliberately affects ALL
builds and not only package builds on cluster, because we need to
be sure that user experiencing failure can always provide informative
build log regardless of settings and without rerunning the build.

Change summary:

- Always do verbose builds for cmake, ninja and GNU configure (the
  latter includes check if --disable-silent-rules is actually supported
  by the configure script; there are isolated cases when it's not true)

sysutils/fusefs-squashfuse: fix LICENSE

PR:		210645
Approved by:	portmgr blanket

sysutils/fusefs-squashfuse: add new port

PR:		210645
Submitted by:	jsmith@resonatingmedia.com

Squashfuse is a command line utility for mounting SquashFS archives
in user-space. It supports almost all features of the SquashFS format.

https://github.com/vasi/squashfuse