[MM-60308] Add a set of "Developer Mode" settings that allow the user to turn off systems or force the app to behave a certain way (#3144)

* Add developer mode manager, implement browser-only mode

* Add indicator when developer mode is enabled

* Add switch to disable notification storage

* Add setting to disable the user activity monitor

* Add switchOff method for easily creating switches to disable/enable functionality, added setting to disable context menu

* Add setting to force legacy API

* Add force new API to remove any support for legacy mode, fix i18n

* Fix lint

* Use one call to `push`

src/renderer/css/components/DeveloperModeIndicator.scss

@@ -0,0 +1,54 @@
+.DeveloperModeIndicator {
+    align-items: center;
+    background: transparent;
+    border-radius: 4px;
+    border: none;
+    cursor: pointer;
+    display: flex;
+    flex-direction: column;
+    justify-content: center;
+    margin: 4px;
+    position: relative;
+    width: 32px;
+
+    i {
+        color: rgba(63, 67, 80, 0.56);
+        cursor: pointer;
+        font-size: 21px;
+        line-height: 21px;
+    }
+
+    &:hover, &:focus {
+        i {
+            color: rgba(63, 67, 80, 0.78);
+        }
+    }
+
+    .DeveloperModeIndicator__badge {
+        background: rgba(210, 75, 78, 1);
+        border-radius: 10px;
+        width: 10px;
+        height: 10px;
+        position: absolute;
+        top: 5px;
+        right: 5px;
+    }
+
+    &.darkMode {
+        i {
+            color: rgba(221, 223, 228, 0.56);
+        }
+
+        &:hover, &:focus {
+            i {
+                color: rgba(221, 223, 228, 0.78);
+            }
+        }
+    }
+}
+
+#DeveloperModeIndicator__tooltip {
+    > .tooltip-inner {
+        max-width: none;
+    }
+}