Add FlipIRFreq v0.2

applications/Tools/flipirfreq/README.md

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+# FlipIRFreq
+
+FlipIRFreq is a Flipper Zero external app for generating either a high-frequency IR carrier or a low-frequency IR pulse train.
+
+Features:
+
+- Carrier mode from `10 kHz` to `1 MHz`
+- Pulse mode from `10.0 Hz` to `500.0 Hz`
+- Burst and continuous transmit modes
+- Adjustable duty cycle and burst length
+- Output selection for `Auto`, `Internal`, or `External (PA7)`
+- Scrollable on-device UI with saved settings
+
+Source repository:
+
+- [jsammarco/FlipIRFreq](https://github.com/jsammarco/FlipIRFreq)

applications/Tools/flipirfreq/manifest.yml

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+sourcecode:
+  type: git
+  location:
+    origin: https://github.com/jsammarco/FlipIRFreq.git
+    commit_sha: c927f16d430ed4120104b107685929e2e23334c9
+
+short_description: Send IR in carrier or low-frequency pulse modes with adjustable frequency, duty cycle, and output.
+description: "@README.md"
+changelog: "@changelog.md"