feat(macros): add Type Text step type to keyboard macros

[mikeshoss]

Summary

• Adds a Type Text step type to keyboard macros, allowing users to enter arbitrary text strings as macro steps
• Reuses existing Paste Text keyboard layout logic to convert text into keystrokes at execution time
• Fully backward compatible — the optional text field doesn't affect existing macros

Problem

The macro editor only allows picking individual keys from a dropdown one at a time, making it impossible to type text strings like usernames, URLs, or commands within a macro.

Solution

Each macro step now has a Step Type toggle (Keys / Type Text). Users can mix both in a single macro:

1. Ctrl+A (select all)
2. Delete (clear field)
3. Type Text: user@example.com
4. Tab (next field)
5. Type Text: some-text-here
6. Enter (submit)

Files Changed

File	Change
ui/src/hooks/stores.ts	Added optional text field to KeySequenceStep
ui/src/hooks/useKeyboard.ts	Added expandTextSteps() for text-to-keystrokes conversion
ui/src/components/MacroStepCard.tsx	Added Keys/Type Text toggle, textarea, invalid char warnings
ui/src/components/MacroForm.tsx	Updated validation for text steps
ui/src/components/MacroBar.tsx	Passes keyboard layout during execution
ui/localization/messages/en.json	Added 7 new localization strings

Test plan

• Create a macro with mixed Keys and Type Text steps
• Verify the Step Type toggle switches between modes
• Enter unsupported characters and verify warning appears
• Execute macro and verify text is typed correctly on remote machine
• Verify existing macros still work unchanged

---

Note

Medium Risk
Medium risk because it changes macro step schema and execution flow (text expansion + keyboard-layout-dependent behavior), which could affect existing macro playback if edge cases slip through.

Overview
Adds a new Type Text option for macro steps, allowing macros to include freeform text alongside traditional key/modifier steps.

Macro execution now accepts an optional keyboard layout and expands step.text into per-character keystroke steps via shared textToMacroSteps logic (also reused by PasteModal). The macro editor UI is updated with a step-type toggle, textarea input, unsupported-character warnings, and validation now treats text as valid step content; localization strings are updated accordingly (including updating existing validation copy across languages).

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✅ mikeshoss
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[mikeshoss]

I have afree to the CLA for jetkvm/kvm mutiple times and it still shows that its not signed yet.