UI: Show sizing grip in dialogs where resizing is useful

Some windows, like the main window and Interact, already do this.

UI/forms/OBSBasicFilters.ui

@@ -13,6 +13,9 @@
   <property name="windowTitle">
    <string>Basic.Filters</string>
   </property>
+  <property name="sizeGripEnabled">
+   <bool>true</bool>
+  </property>
   <layout class="QVBoxLayout" name="verticalLayout">
    <item>
     <layout class="QHBoxLayout" name="horizontalLayout" stretch="1,10">

UI/forms/OBSBasicProperties.ui

@@ -13,6 +13,9 @@
   <property name="windowTitle">
    <string>Properties</string>
   </property>
+  <property name="sizeGripEnabled">
+   <bool>true</bool>
+  </property>
   <layout class="QVBoxLayout" name="verticalLayout">
    <item>
     <widget class="QSplitter" name="windowSplitter">

UI/forms/OBSBasicSettings.ui

@@ -25,6 +25,9 @@
   <property name="windowTitle">
    <string>Settings</string>
   </property>
+  <property name="sizeGripEnabled">
+   <bool>true</bool>
+  </property>
   <layout class="QVBoxLayout" name="verticalLayout">
    <item>
     <layout class="QHBoxLayout" name="horizontalLayout">

UI/forms/OBSExtraBrowsers.ui

@@ -13,6 +13,9 @@
   <property name="windowTitle">
    <string>ExtraBrowsers</string>
   </property>
+  <property name="sizeGripEnabled">
+   <bool>true</bool>
+  </property>
   <layout class="QVBoxLayout" name="verticalLayout">
    <item>
     <widget class="QLabel" name="label">

UI/forms/OBSImporter.ui

@@ -13,6 +13,9 @@
   <property name="windowTitle">
    <string>Importer</string>
   </property>
+  <property name="sizeGripEnabled">
+   <bool>true</bool>
+  </property>
   <layout class="QGridLayout" name="gridLayout">
    <item row="0" column="0">
     <widget class="QLabel" name="label">

UI/forms/OBSLogViewer.ui

@@ -13,6 +13,9 @@
   <property name="windowTitle">
    <string>LogViewer</string>
   </property>
+  <property name="sizeGripEnabled">
+   <bool>true</bool>
+  </property>
   <layout class="QVBoxLayout" name="verticalLayout">
    <property name="leftMargin">
     <number>0</number>

UI/forms/OBSMissingFiles.ui

@@ -13,6 +13,9 @@
   <property name="windowTitle">
    <string>MissingFiles</string>
   </property>
+  <property name="sizeGripEnabled">
+   <bool>true</bool>
+  </property>
   <layout class="QGridLayout" name="gridLayout">
    <item row="0" column="0">
     <layout class="QHBoxLayout" name="horizontalLayout_3">

UI/forms/OBSRemux.ui

@@ -13,6 +13,9 @@
   <property name="windowTitle">
    <string>RemuxRecordings</string>
   </property>
+  <property name="sizeGripEnabled">
+   <bool>true</bool>
+  </property>
   <layout class="QGridLayout" name="gridLayout">
    <item row="0" column="0">
     <widget class="QLabel" name="label">

UI/forms/OBSYoutubeActions.ui

@@ -19,6 +19,9 @@
   <property name="windowTitle">
    <string>YouTube.Actions.WindowTitle</string>
   </property>
+  <property name="sizeGripEnabled">
+   <bool>true</bool>
+  </property>
   <layout class="QVBoxLayout" name="verticalLayout">
    <item>
     <widget class="QTabWidget" name="tabWidget">

UI/frontend-plugins/frontend-tools/forms/scripts.ui

@@ -13,6 +13,9 @@
   <property name="windowTitle">
    <string>Scripts</string>
   </property>
+  <property name="sizeGripEnabled">
+   <bool>true</bool>
+  </property>
   <layout class="QVBoxLayout" name="verticalLayout">
    <item>
     <widget class="QTabWidget" name="tabWidget">