Add Linux related build scripts

including following changes:
- Linux build scripts from SuperSlicer project;
- Update BuildLinux dev dependencies, remove unused bits;
- Update BuildLinuxImage to use nproc for cpus;
- CMake: render BuildLinuxImage and build_appimage templates;
- Fix "DSO missing" linking problems;
- Add Podman Containerfile for building;
- Update BuildLinux.sh to work better in container build;
- fixes to create AppImage inside container;
- add env to build environment;
- Update build instructions in Containerfile;

Change-Id: I73e30ab488cda8c1b0886cd34858e125596f282b
(cherry picked from commit 83fc26670ca592c91c7af1d4033a04b587cfd4cd)

Containerfile

@@ -0,0 +1,44 @@
+# Build Bambu Slicer in a container
+#
+# Build an AppImage:
+# rm -rf build; sudo podman build .. -t bambu-studio  &&  sudo podman run --rm localhost/bambu-studio /bin/bash -c 'tar -c $(find build | grep ubu64.AppImage | head -1)' | tar -xv
+#
+# Troubleshooting:
+# sudo podman run -it localhost/bambu-studio /bin/bash
+
+FROM docker.io/ubuntu:kinetic
+LABEL maintainer "DeftDawg <DeftDawg@gmail.com>"
+
+# Add a deb-src
+RUN echo deb-src http://archive.ubuntu.com/ubuntu \
+    $(cat /etc/*release | grep VERSION_CODENAME | cut -d= -f2) main universe>> /etc/apt/sources.list 
+
+RUN apt-get update && apt-get install  -y \
+    git \
+    build-essential \
+    autoconf \
+    cmake \
+    libglu1-mesa-dev \
+    libgtk-3-dev \
+    libdbus-1-dev \
+    curl \
+    wget \
+    sudo
+
+COPY ../BambuStudio BambuStudio
+
+WORKDIR BambuStudio
+
+# These can run together, but we run them seperate for podman caching
+# Update System dependencies
+RUN ./BuildLinux.sh -u
+
+# Build dependencies in ./deps
+RUN ./BuildLinux.sh -d
+
+# Build slic3r
+RUN ./BuildLinux.sh -s
+
+# Build AppImage
+ENV container podman
+RUN ./BuildLinux.sh -i