Increase stack and heap and memory pool sizes - sketches were not loading

I found that the majority of the sketches I would try would not load with the current default
settings.

Not sure how large they need to be, but this has worked for most of my sketches and I believe @mjs513 test sketches as well

Author: KurtE

Diff for: .gitignore

@@ -1,3 +1,4 @@
 extra/post_build_tool/distrib/
 build/
 venv/
+api/

Diff for: loader/boards/arduino_giga_r1_m7.conf

@@ -10,6 +10,10 @@ CONFIG_UART_LINE_CTRL=y
 CONFIG_CDC_ACM_DTE_RATE_CALLBACK_SUPPORT=y
 
 CONFIG_LLEXT_STORAGE_WRITABLE=n
+CONFIG_HEAP_MEM_POOL_SIZE=2048
+CONFIG_SHELL_STACK_SIZE=32768
+CONFIG_MAIN_STACK_SIZE=32768
+CONFIG_LLEXT_HEAP_SIZE=128
 
 CONFIG_FPU=y
 
@@ -22,4 +26,4 @@ CONFIG_MEMC=y
 #CONFIG_VIDEO=y
 CONFIG_VIDEO_STM32_DCMI=y
 CONFIG_VIDEO_BUFFER_POOL_NUM_MAX=1
-CONFIG_VIDEO_BUFFER_POOL_SZ_MAX=160000
+CONFIG_VIDEO_BUFFER_POOL_SZ_MAX=160000