Underscore issue reporter type names (#112)

* Underscore issue reporter type names

The big issue here is that `FatalErrorReporter` takes precedence in
autocomplete over Swift's `fatalError` and is quite an annoyance when
importing our library.

These probably should have never been prominent when the preferred
spelling is `.fatalError`, etc.

This is a breaking bug fix change with fix-its.

* wip

Sources/IssueReporting/Internal/Deprecations.swift

@@ -0,0 +1,12 @@
+// NB: Deprecated after 1.2.2
+
+#if canImport(Darwin)
+ @available(*, unavailable, renamed: "_BreakpointReporter")
+ public typealias BreakpointReporter = _BreakpointReporter
+#endif
+
+@available(*, unavailable, renamed: "_FatalErrorReporter")
+public typealias FatalErrorReporter = _FatalErrorReporter
+
+@available(*, unavailable, renamed: "_RuntimeWarningReporter")
+public typealias RuntimeWarningReporter = _RuntimeWarningReporter

Sources/IssueReporting/IssueReporters/BreakpointReporter.swift

@@ -1,7 +1,7 @@
 #if canImport(Darwin)
  import Darwin
 
- extension IssueReporter where Self == BreakpointReporter {
+ extension IssueReporter where Self == _BreakpointReporter {
  /// An issue reporter that pauses program execution when a debugger is attached.
  ///
  /// Logs a warning to the console and raises `SIGTRAP` when an issue is received.
@@ -12,7 +12,7 @@
  /// attached.
  ///
  /// Use ``IssueReporter/breakpoint`` to create one of these values.
- public struct BreakpointReporter: IssueReporter {
+ public struct _BreakpointReporter: IssueReporter {
  public func reportIssue(
  _ message: @autoclosure () -> String?,
  fileID: StaticString,

Sources/IssueReporting/IssueReporters/FatalErrorReporter.swift

@@ -1,4 +1,4 @@
-extension IssueReporter where Self == FatalErrorReporter {
+extension IssueReporter where Self == _FatalErrorReporter {
  /// An issue reporter that terminates program execution.
  ///
  /// Calls Swift's `fatalError` function when an issue is received.
@@ -8,7 +8,7 @@ extension IssueReporter where Self == FatalErrorReporter {
 /// A type representing an issue reporter that terminates program execution.
 ///
 /// Use ``IssueReporter/fatalError`` to create one of these values.
-public struct FatalErrorReporter: IssueReporter {
+public struct _FatalErrorReporter: IssueReporter {
  public func reportIssue(
  _ message: @autoclosure () -> String?,
  fileID: StaticString,

Sources/IssueReporting/IssueReporters/RuntimeWarningReporter.swift

@@ -4,7 +4,7 @@ import Foundation
  import os
 #endif
 
-extension IssueReporter where Self == RuntimeWarningReporter {
+extension IssueReporter where Self == _RuntimeWarningReporter {
  /// An issue reporter that emits "purple" runtime warnings to Xcode and logs fault-level messages
  /// to the console.
  ///
@@ -22,7 +22,7 @@ extension IssueReporter where Self == RuntimeWarningReporter {
 /// fault-level messages to the console.
 ///
 /// Use ``IssueReporter/runtimeWarning`` to create one of these values.
-public struct RuntimeWarningReporter: IssueReporter {
+public struct _RuntimeWarningReporter: IssueReporter {
  #if canImport(os)
  @UncheckedSendable
  #if canImport(Darwin)