ESP32 bootloop when flashed with esp-web-tools

Hi,

I am having problem with uploading firmware to ESP32 device via esp-web-tools.
I have found similar issues #151 and [here in esp-web-flasher](https://github.com/NabuCasa/esp-web-flasher/issues/83)

So after building the firmware with esphome I am able to flash the files successfully with esptool.exe
`.\esptool.exe --port COM3 --chip esp32 --before default_reset --after hard_reset --baud 921600 write_flash -fm dio -fs detect 0x1000 firmware\bootloader_dout_40m.bin 0x8000 firmware\partitions.bin 0xe000 firmware\boot_app0.bin 0x00010000 firmware\firmware.bin`

### Manifest
```
{
"name": "Test",
"version": "1.1",
"builds": [
{
"chipFamily": "ESP32",
"parts": [
{
"path": "firmware/bootloader_dout_40m.bin",
"offset": 4096
},
{
"path": "firmware/partitions.bin",
"offset": 32768
},
{
"path": "firmware/boot_app0.bin",
"offset": 57344
},
{
"path": "firmware/firmware.bin",
"offset": 65536
}

]
}
]
}
```

But when esp-web-tools are used (tested V7.1.0 and V8.0.1) the endless reset loop is shown in terminal log:
```
rst:0x3 (SW_RESET),boot:0x17 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DOUT, clock div:2
load:0x3fff0018,len:4
load:0x3fff001c,len:1044
load:0x40078000,len:10124
load:0x40080400,len:5828
entry 0x400806a8
ets Jul 29 2019 12:21:46
```

I have also teste with `dio` mode. I am setting the mode from the ESPHome YAML:
```
esphome:
name: XXXXXXX
build_path: ./build/
name_add_mac_suffix: true
project:
name: "XXXX.XXXXX"
version: "1.0.8"
platformio_options:
upload_speed: 460800
monitor_speed: 115200
board_build.partitions: ../XXXXX_partitions.csv
board_build.flash_mode: dout
```
### Firmware verification
I have also tried to verify the written firmware with esptools.exe. When written via esptools.exe from console all parts are normally verified, but when written via esp-web-tools I get the following mismatch error:
```
esptool --port COM3 --chip esp32 --before default_reset --after hard_reset --baud 921600 verify_flash -fm dio -fs detect 0x1000 firmware\bootloader_dout_40m.bin
```

Error
```
esptool.py v3.3.1
Serial port COM3
Connecting....
Chip is ESP32-D0WD-V3 (revision 3)
Features: WiFi, BT, Dual Core, 240MHz, VRef calibration in efuse, Coding Scheme None
Crystal is 40MHz
MAC: 34:94:54:33:4f:44
Uploading stub...
Running stub...
Stub running...
Changing baud rate to 921600
Changed.
Configuring flash size...
Auto-detected Flash size: 8MB
Flash params set to 0x0230
Verifying 0x42d0 (17104) bytes @ 0x00001000 in flash against firmware\bootloader_dout_40m.bin...
-- verify FAILED (digest mismatch)

A fatal error occurred: Verify failed.
```

### esp-web-flasher
I have also tried uploading with the [esp-web-flasher](https://github.com/NabuCasa/esp-web-flasher/issues/83) and I am also getting the bootloop situation.

I also tried to flash via esp-web-tools and then flash only the bootloader part with esptool.exe and the firmware works that way.
And an another unsuccessful test was to upload all parts via console (works) and then flash all parts except for the bootloader via esp-web-tools.

I would really appreciate your help on this issue as I am stuck on this for a around a week.

Thanks.