FuriHal: replace HAL with LL in RFID Part 1. Drop F6. (#1049)

* FuriHal: new speaker HAL
* FuriHal: drop PWM
* FuriHal: move COMP1 to LL
* FuriHal: move COMP1 to LL backport to F6
* FuriHal: remove missing gpio_rfid_carrier from F6
* FurHal: use LL for system controls in flash HAL
* Drop F6 source tree
* Drop F6 from GitHub workflow
* Tie USE_FULL_ASSERT with APP_UNIT_TESTS
* Speaker: return to old volume calculation
* FreeRTOS: move TCB header to glue

Co-authored-by: DrZlo13 <who.just.the.doctor@gmail.com>

.github/workflows/build.yml

@@ -10,7 +10,7 @@ on:
   pull_request:
 
 env:
-  TARGETS: f6 f7
+  TARGETS: f7
   DEFAULT_TARGET: f7
 
 jobs:

.github/workflows/lint_c.yml

@@ -10,7 +10,7 @@ on:
   pull_request:
 
 env:
-  TARGETS: f6 f7
+  TARGETS: f7
 
 jobs:
   lint_c_cpp: