ports: Add mypaint port

ports/libmypaint/build.sh

@@ -0,0 +1,12 @@
+#!/bin/bash ../install.sh
+
+NAME='libmypaint'
+VERSION='1.6.1'
+DOWNLOAD_URL="https://github.com/mypaint/libmypaint/releases/download/v$VERSION/libmypaint-$VERSION.tar.xz#741754f293f6b7668f941506da07cd7725629a793108bb31633fb6c3eae5315f"
+DEPENDENCIES=('glib' 'json-c')
+CONFIG_SUB=('config.sub')
+CONFIGURE_OPTIONS=(
+	'--disable-introspection'
+	'--disable-i18n'
+	'--disable-nls'
+)

ports/libmypaint/patches/0001-add-shared-library-support.patch

@@ -0,0 +1,31 @@
+diff -ruN libmypaint-1.6.1/configure libmypaint-1.6.1-banan_os/configure
+--- libmypaint-1.6.1/configure	2020-05-11 19:38:35.000000000 +0300
++++ libmypaint-1.6.1-banan_os/configure	2026-03-25 03:05:53.901886496 +0200
+@@ -5608,6 +5608,10 @@
+   lt_cv_deplibs_check_method=pass_all
+   ;;
+ 
++banan_os*)
++  lt_cv_deplibs_check_method=pass_all
++  ;;
++
+ beos*)
+   lt_cv_deplibs_check_method=pass_all
+   ;;
+@@ -11347,6 +11351,16 @@
+   esac
+   ;;
+ 
++banan_os*)
++  version_type=linux # correct to gnu/linux during the next big refactor
++  need_lib_prefix=no
++  need_version=no
++  library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext'
++  soname_spec='$libname$release$shared_ext$major'
++  dynamic_linker="$host_os DynamicLoader.so"
++  shlibpath_var=LD_LIBRARY_PATH
++  ;;
++
+ beos*)
+   library_names_spec='$libname$shared_ext'
+   dynamic_linker="$host_os ld.so"

ports/mypaint-brushes/build.sh

@@ -0,0 +1,5 @@
+#!/bin/bash ../install.sh
+
+NAME='mypaint-brushes'
+VERSION='2.0.2'
+DOWNLOAD_URL="https://github.com/mypaint/mypaint-brushes/releases/download/v$VERSION/mypaint-brushes-$VERSION.tar.xz#7984a74edef94571d872d0629b224abaa956a36f632f5c5516b33d22e49eb566"