ISTWCMS-5879 Add none (default), between, between when narrow for column separator

config/install/layout_builder_styles.style.uw_lbs_column_separator_between.yml

+langcode: en
+status: true
+dependencies: {  }
+id: uw_lbs_column_separator_between
+label: Between
+classes: uw-column-separator--between
+type: section
+group: column_separator
+block_restrictions: {  }
+layout_restrictions:
+  - layout_1
+  - layout_2
+  - layout_3
+  - layout_twocol_section
+  - layout_threecol_section
+  - layout_fourcol_section
+  - uw_2_column
+  - uw_3_column
+  - uw_4_column
+  - uw_5_column
+  - uw_inverted_l_right
+  - uw_inverted_l_left
+weight: 0

config/install/layout_builder_styles.style.uw_lbs_column_separator_narrow.yml

+langcode: en
+status: true
+dependencies: {  }
+id: uw_lbs_column_separator_narrow
+label: 'Between when narrow'
+classes: uw-column-separator--narrow
+type: section
+group: column_separator
+block_restrictions: {  }
+layout_restrictions:
+  - layout_1
+  - layout_2
+  - layout_3
+  - layout_twocol_section
+  - layout_threecol_section
+  - layout_fourcol_section
+  - uw_2_column
+  - uw_3_column
+  - uw_4_column
+  - uw_5_column
+  - uw_inverted_l_right
+  - uw_inverted_l_left
+weight: 0

config/install/layout_builder_styles.style.uw_lbs_column_separator_none.yml

+langcode: en
+status: true
+dependencies: {  }
+id: uw_lbs_column_separator_none
+label: None
+classes: uw-column-separator--none
+type: section
+group: column_separator
+block_restrictions: {  }
+layout_restrictions:
+  - layout_1
+  - layout_2
+  - layout_3
+  - layout_twocol_section
+  - layout_threecol_section
+  - layout_fourcol_section
+  - uw_2_column
+  - uw_3_column
+  - uw_4_column
+  - uw_5_column
+  - uw_inverted_l_right
+  - uw_inverted_l_left
+weight: 0