In-flight entertainment (#3484)

- +language_selector2
- Language Selector 2 working!
- Prevent languages showing in wrong order first
- copilot_menu2 (though only tested offling, which is insufficient)
- Dismiss tooltips at capture
- Get ChannelModal opening

[[PR Description]]

Release Notes:

-  N/A

Cargo.lock

@@ -2143,6 +2143,25 @@ dependencies = [
  "workspace",
 ]
 
+[[package]]
+name = "copilot_button2"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "copilot2",
+ "editor2",
+ "fs2",
+ "futures 0.3.28",
+ "gpui2",
+ "language2",
+ "settings2",
+ "smol",
+ "theme2",
+ "util",
+ "workspace2",
+ "zed_actions2",
+]
+
 [[package]]
 name = "core-foundation"
 version = "0.9.3"
@@ -4791,6 +4810,24 @@ dependencies = [
  "workspace",
 ]
 
+[[package]]
+name = "language_selector2"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "editor2",
+ "fuzzy2",
+ "gpui2",
+ "language2",
+ "picker2",
+ "project2",
+ "settings2",
+ "theme2",
+ "ui2",
+ "util",
+ "workspace2",
+]
+
 [[package]]
 name = "language_tools"
 version = "0.1.0"
@@ -11753,6 +11790,7 @@ dependencies = [
  "collections",
  "command_palette2",
  "copilot2",
+ "copilot_button2",
  "ctor",
  "db2",
  "diagnostics2",
@@ -11772,6 +11810,7 @@ dependencies = [
  "isahc",
  "journal2",
  "language2",
+ "language_selector2",
  "lazy_static",
  "libc",
  "log",