Add font picker (Segoe UI, Tahoma, Tw Cen MT, Nunito, Quicksand, Varela Round), bump to 0.1.10

Each channel window's settings panel gets a Font list, and wIRC main gets a Font
button that opens the same list for the server messages box. Every name is drawn
in its own font as a preview. The choice is saved per window in window_prefs.json
(fontId) and applies to the scrollback, user list, input box and title.

- Segoe UI, Tahoma and Tw Cen MT are Microsoft-licensed, so they aren't bundled:
  they load from the Windows font folders at runtime and are only listed when
  present (Tw Cen MT comes with Office).
- Nunito, Quicksand and Varela Round are SIL OFL fonts, bundled in
  resources/fonts with their license files.
- A missing or unloadable font falls back to Monospace.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

build.gradle.kts

@@ -6,7 +6,7 @@ plugins {
 }
 
 group = "com.tpuahsiew.wirc"
-version = "0.1.9"
+version = "0.1.10"
 
 // No project-level repositories{} block here: settings.gradle.kts sets
 // dependencyResolutionManagement.repositoriesMode = FAIL_ON_PROJECT_REPOS and already
@@ -38,7 +38,7 @@ compose.desktop {
             appResourcesRootDir.set(project.file("installerResources"))
             targetFormats(TargetFormat.Msi, TargetFormat.Exe)
             packageName = "wIRC"
-            packageVersion = "0.1.9"
+            packageVersion = "0.1.10"
             windows {
                 menuGroup = "wIRC"
                 upgradeUuid = "8f14e45f-ceea-4a5e-9c3b-5b1f0e8c2b7a"