Improve keymap json schema (#23044)

Also:

* Adds `impl_internal_actions!` for deriving the `Action` trait without
registering.

* Removes some deserializers that immediately fail in favor of
`#[serde(skip)]` on fields where they were used. This also omits them
from the schema.

Release Notes:

- Keymap settings file now has more JSON schema information to inform
`json-language-server` completions and info, particularly for actions
that take input.

crates/terminal_view/Cargo.toml

@@ -29,6 +29,7 @@ itertools.workspace = true
 language.workspace = true
 project.workspace = true
 task.workspace = true
+schemars.workspace = true
 search.workspace = true
 serde.workspace = true
 serde_json.workspace = true

crates/terminal_view/src/terminal_view.rs

@@ -15,6 +15,7 @@ use gpui::{
 use language::Bias;
 use persistence::TERMINAL_DB;
 use project::{search::SearchQuery, terminals::TerminalKind, Fs, Metadata, Project};
+use schemars::JsonSchema;
 use terminal::{
     alacritty_terminal::{
         index::Point,
@@ -66,14 +67,14 @@ const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
 
 const GIT_DIFF_PATH_PREFIXES: &[char] = &['a', 'b'];
 
-///Event to transmit the scroll from the element to the view
+/// Event to transmit the scroll from the element to the view
 #[derive(Clone, Debug, PartialEq)]
 pub struct ScrollTerminal(pub i32);
 
-#[derive(Clone, Debug, Default, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Default, Deserialize, JsonSchema, PartialEq)]
 pub struct SendText(String);
 
-#[derive(Clone, Debug, Default, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Default, Deserialize, JsonSchema, PartialEq)]
 pub struct SendKeystroke(String);
 
 impl_actions!(terminal, [SendText, SendKeystroke]);