Add button to open settings from resource browser (#24)

A button to open settings, right to the search option:


![image](https://user-images.githubusercontent.com/1596222/232865750-6b76b6fb-7686-47b6-bb27-3f46eac4baf7.png)

Author: jakimowb

pyqgis_resource_browser/gui/resource_browser.py

@@ -2,8 +2,8 @@
 import os
 import pathlib
 import re
+from functools import partial
 
-# PyQGIS
 from qgis.core import QgsApplication
 from qgis.PyQt import uic
 from qgis.PyQt.QtCore import QFile, QModelIndex, QRegExp, Qt, QTextStream, pyqtSignal
@@ -22,7 +22,12 @@
     QWidget,
 )
 
+# PyQGIS
+from qgis.utils import iface
+
 # plugin
+from pyqgis_resource_browser.__about__ import __title__
+
 from ..core.resource_table_model import ResourceTableFilterModel, ResourceTableModel
 from ..core.resource_table_view import ResourceTableView
 from ..toolbelt import PlgOptionsManager
@@ -97,6 +102,16 @@ def __init__(self, *args, **kwds):
         self.optionUseRegex.toggled.connect(self.updateFilter)
         self.tbFilter.textChanged.connect(self.updateFilter)
 
+        # settings button
+        self.btn_settings.setToolTip(self.tr("Settings"))
+        self.btn_settings.setText("")
+        self.btn_settings.setIcon(
+            QgsApplication.getThemeIcon("console/iconSettingsConsole.svg")
+        )
+        self.btn_settings.pressed.connect(
+            partial(iface.showOptionsDialog, currentPage=f"mOptionsPage{__title__}")
+        )
+
         self.reloadConfig()
 
     def reloadConfig(self):

pyqgis_resource_browser/gui/resource_browser.ui

@@ -37,7 +37,13 @@
      <item>
       <widget class="QLabel" name="label">
        <property name="text">
-        <string>Filter</string>
+        <string>Filter:</string>
+       </property>
+       <property name="margin">
+        <number>2</number>
+       </property>
+       <property name="textInteractionFlags">
+        <set>Qt::NoTextInteraction</set>
        </property>
       </widget>
      </item>
@@ -84,6 +90,13 @@
        </property>
       </widget>
      </item>
+     <item>
+      <widget class="QPushButton" name="btn_settings">
+       <property name="text">
+        <string>Settings</string>
+       </property>
+      </widget>
+     </item>
     </layout>
    </item>
    <item>