Added gitignore templates

ignore/community/embedded/AtmelStudio.gitignore

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+## Ignore Atmel Studio temporary files and build results
+# https://www.microchip.com/mplab/avr-support/atmel-studio-7
+
+# Atmel Studio is powered by an older version of Visual Studio,
+# so most of the project and solution files are the same as VS files,
+# only prefixed by an `at`.
+
+#Build Directories
+[Dd]ebug/
+[Rr]elease/
+
+#Build Results
+*.o
+*.d
+*.eep
+*.elf
+*.hex
+*.map
+*.srec
+
+#User Specific Files
+*.atsuo

ignore/community/embedded/IAR_EWARM.gitignore

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+# gitignore template for the IAR EWARM
+# website: https://www.iar.com/knowledge/support/technical-notes/ide/which-files-should-be-version-controlled/
+
+# Some tools will put the EWARM files
+# under a subdirectory with the same name
+# as the configuration.
+# Example
+# EWARM/Config1/Obj /List /Exe
+# EWARM/Config2/Obj /List /Exe
+EWARM/**/Obj
+EWARM/**/List
+EWARM/**/Exe
+
+# Autogenerated project files
+*.dep
+*.ewt
+
+# Autogenerated folder for debugger
+EWARM/settings

ignore/community/embedded/esp-idf.gitignore

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+# gitignore template for esp-idf, the official development framework for ESP32
+# https://github.com/espressif/esp-idf
+
+build/
+sdkconfig
+sdkconfig.old

ignore/community/embedded/uVision.gitignore

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+# git ignore file for Keil µVision Project
+
+# µVision 5 and µVision 4 Project screen layout file
+*.uvguix.*
+*.uvgui.*
+
+# Listing Files
+*.i
+*.lst
+*.m51
+*.m66
+*.map
+
+# Object Files
+*.axf
+*.b[0-2][0-9]
+*.b3[0-1]
+*.bak
+*.build_log.htm
+*.crf
+*.d
+*.dep
+*.elf
+*.htm
+*.iex
+*.lnp
+*.o
+*.obj
+*.sbr
+
+# Firmware Files
+*.bin
+*.h86
+*.hex
+
+# Build Files
+.bat
+
+# Debugger Files
+.ini
+
+# JLink Files
+JLinkLog.txt
+
+# Other Files