Pause menu functionality (#89)

* make menu use actual soundsettings values
* allow changing volume in pause menu
* persist saving settings

Cargo.lock

@@ -267,7 +267,7 @@ dependencies = [
  "objc2-foundation 0.3.2",
  "parking_lot",
  "percent-encoding",
- "windows-sys 0.59.0",
+ "windows-sys 0.60.2",
  "x11rb",
 ]
 
@@ -1359,6 +1359,25 @@ dependencies = [
  "uuid",
 ]
 
+[[package]]
+name = "bevy_pkv"
+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "356a9c6fdc13faf7897103b43a8b84aafe24e1bbf1599df1fb00dc4e9b7055db"
+dependencies = [
+ "bevy_app",
+ "bevy_ecs",
+ "cfg_aliases",
+ "directories",
+ "redb",
+ "rmp-serde",
+ "serde",
+ "serde_json",
+ "thiserror 2.0.17",
+ "wasm-bindgen",
+ "web-sys",
+]
+
 [[package]]
 name = "bevy_platform"
 version = "0.17.3"
@@ -2760,6 +2779,27 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "11277822c27bde750de02c5dc5159b91e88bf2661a2c1d98106f2fb1c5c6f590"
 
+[[package]]
+name = "directories"
+version = "6.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "16f5094c54661b38d03bd7e50df373292118db60b585c08a411c6d840017fe7d"
+dependencies = [
+ "dirs-sys",
+]
+
+[[package]]
+name = "dirs-sys"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e01a3366d27ee9890022452ee61b2b63a67e6f13f58900b651ff5665f0bb1fab"
+dependencies = [
+ "libc",
+ "option-ext",
+ "redox_users",
+ "windows-sys 0.61.2",
+]
+
 [[package]]
 name = "disjoint-sets"
 version = "0.4.2"
@@ -3645,6 +3685,7 @@ dependencies = [
  "bevy_ballistic",
  "bevy_common_assets",
  "bevy_debug_log",
+ "bevy_pkv",
  "bevy_replicon",
  "bevy_replicon_renet",
  "bevy_sprite3d",
@@ -4870,6 +4911,12 @@ dependencies = [
  "windows-sys 0.60.2",
 ]
 
+[[package]]
+name = "option-ext"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "04744f49eae99ab78e0d5c0b603ab218f515ea8cfe5a456d7629ad883a3b6e7d"
+
 [[package]]
 name = "orbclient"
 version = "0.3.49"
@@ -5411,6 +5458,15 @@ version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a0d463f2884048e7153449a55166f91028d5b0ea53c79377099ce4e8cf0cf9bb"
 
+[[package]]
+name = "redb"
+version = "3.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ae323eb086579a3769daa2c753bb96deb95993c534711e0dbe881b5192906a06"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "redox_syscall"
 version = "0.4.1"
@@ -5438,6 +5494,17 @@ dependencies = [
  "bitflags 2.10.0",
 ]
 
+[[package]]
+name = "redox_users"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4e608c6638b9c18977b00b475ac1f28d14e84b27d8d42f70e0bf1e3dec127ac"
+dependencies = [
+ "getrandom 0.2.16",
+ "libredox",
+ "thiserror 2.0.17",
+]
+
 [[package]]
 name = "regex"
 version = "1.12.2"
@@ -5507,6 +5574,28 @@ dependencies = [
  "log",
 ]
 
+[[package]]
+name = "rmp"
+version = "0.8.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "228ed7c16fa39782c3b3468e974aec2795e9089153cd08ee2e9aefb3613334c4"
+dependencies = [
+ "byteorder",
+ "num-traits",
+ "paste",
+]
+
+[[package]]
+name = "rmp-serde"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "52e599a477cf9840e92f2cde9a7189e67b42c57532749bf90aea6ec10facd4db"
+dependencies = [
+ "byteorder",
+ "rmp",
+ "serde",
+]
+
 [[package]]
 name = "robust"
 version = "1.2.0"