Migrate Fileoutput and viewlayer management ops from gp_render

Better overall UI.
Split file output in a separate panel

fn.py

@@ -6,6 +6,7 @@ import json
 from .constant import TECH_PASS_KEYWORDS
 from pathlib import Path
 
+
 # region Manage nodes
 
 def real_loc(n):
@@ -13,6 +14,43 @@ def real_loc(n):
         return n.location
     return n.location + real_loc(n.parent)
 
+def set_scene_output_from_active_fileout_item():
+    scn = bpy.context.scene
+    rd = scn.render
+    ntree = scn.node_tree
+    fo = ntree.nodes.active
+
+    if fo.type != 'OUTPUT_FILE':
+        return
+    sl = fo.file_slots[fo.active_input_index]
+    full_path = os.path.join(fo.base_path, sl.path)
+
+    rd.filepath = full_path
+
+    fmt = fo.format if sl.use_node_format else sl.format
+    ## set those attr first to avoid error settings other attributes in next loop
+    rd.image_settings.file_format = fmt.file_format
+    rd.image_settings.color_mode = fmt.color_mode
+    rd.image_settings.color_depth = fmt.color_depth if fmt.color_depth else 8 # Force set since Sometimes it's weirdly set to "" (not in enum choice)
+
+    excluded = ['file_format', 'color_mode', 'color_depth',
+        'view_settings', 'views_format']
+
+    ''' ## all attrs
+    # 'cineon_black', 'cineon_gamma', 'cineon_white',
+    #  'color_depth', 'color_mode', 'compression', 'display_settings',
+    #  'exr_codec', 'file_format', 'jpeg2k_codec', 'quality',
+    #  'rna_type', 'stereo_3d_format', 'tiff_codec', 'use_cineon_log',
+    #  'use_jpeg2k_cinema_48', 'use_jpeg2k_cinema_preset', 'use_jpeg2k_ycc',
+    #  'use_preview', 'use_zbuffer']
+    '''
+
+    for attr in dir(fmt):
+        if attr.startswith('__') or attr.startswith('bl_') or attr in excluded:
+            continue
+        if hasattr(scn.render.image_settings, attr) and not scn.render.image_settings.is_property_readonly(attr):
+            setattr(scn.render.image_settings, attr, getattr(fmt, attr))
+
 def set_file_output_format(fo):
     """Default fileout format for output file node
     Get from OUTPUT_RENDER_FILE_FORMAT environment variable