Add telemetry for supermaven (#11821)

Data migration plan:

- [X] Make a duplicate table of `copilot_events`
    - Name: `inline_completion_events`
    - Omit `suggestion_id` column
- [X-reverted-skipping] In collab, continue to match on copilot_events,
but simply stuff their data into inline_completion_events, to forward it
to the new table
- [skipping] Once collab is deployed, ensure no events are being sent to
copilot_events, migrate `copilot_events` to new table via a transaction
- [skipping] Delete `copilot_events` table

---

- [X] Locally test that copilot events sent from old clients get put
into inline_completions_table
- [X] Locally test that copilot events and supermaven events sent from
new clients get put into inline_completions_table

---

- [X] Why are discard events being spammed?
- A:
8d4315712b/crates/editor/src/editor.rs (L2147)


![scr-20240514-pqmg](https://github.com/zed-industries/zed/assets/19867440/e51e7ae4-21b8-47a2-bfaa-f68fb355e409)

This will throw off the past results for accepted / dismissed that I was
wanting to use to evaluate Supermaven quality, by comparing its rate
with copilot's rate.

I'm not super thrilled with this fix, but I think it'll do. In the
`supermaven_completions_provider`, we check if there's a `completion_id`
before sending either an accepted or discard completion event. I don't
see a similar construct in the `copilot_completions_provider` to
piggyback off of, so I begrudgingly introduced
`should_allow_event_to_send` and had it follow the same pattern that
`completion_id` does. Maybe there's a better way?

---

Adds events to supermaven suggestions. Makes "CopilotEvents" generic ->
"InlineCompletionEvents".

Release Notes:

- N/A

crates/client/src/telemetry.rs

@@ -15,9 +15,9 @@ use std::io::Write;
 use std::{env, mem, path::PathBuf, sync::Arc, time::Duration};
 use sysinfo::{CpuRefreshKind, Pid, ProcessRefreshKind, RefreshKind, System};
 use telemetry_events::{
-    ActionEvent, AppEvent, AssistantEvent, AssistantKind, CallEvent, CopilotEvent, CpuEvent,
-    EditEvent, EditorEvent, Event, EventRequestBody, EventWrapper, ExtensionEvent, MemoryEvent,
-    SettingEvent,
+    ActionEvent, AppEvent, AssistantEvent, AssistantKind, CallEvent, CpuEvent, EditEvent,
+    EditorEvent, Event, EventRequestBody, EventWrapper, ExtensionEvent, InlineCompletionEvent,
+    MemoryEvent, SettingEvent,
 };
 use tempfile::NamedTempFile;
 #[cfg(not(debug_assertions))]
@@ -241,14 +241,14 @@ impl Telemetry {
         self.report_event(event)
     }
 
-    pub fn report_copilot_event(
+    pub fn report_inline_completion_event(
         self: &Arc<Self>,
-        suggestion_id: Option<String>,
+        provider: String,
         suggestion_accepted: bool,
         file_extension: Option<String>,
     ) {
-        let event = Event::Copilot(CopilotEvent {
-            suggestion_id,
+        let event = Event::InlineCompletion(InlineCompletionEvent {
+            provider,
             suggestion_accepted,
             file_extension,
         });